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symbolab.com

symbolab.com is SSL secured

Free website and domain report on symbolab.com

Last Updated: 9th October, 2023 Update Now
Overview

Snoop Summary for symbolab.com

This is a free and comprehensive report about symbolab.com. Our records indicate that symbolab.com is privately registered by Domains By Proxy, LLC. Symbolab.com is expected to earn an estimated $12,534 USD per day from advertising revenue. The sale of symbolab.com would possibly be worth $9,149,466 USD. This figure is based on the daily revenue potential of the website over a 24 month period. Symbolab.com is unbelievably popular with an estimated 1,346,115 daily unique visitors. This report was last updated 9th October, 2023.

About symbolab.com

Site Preview: symbolab.com symbolab.com
Title: Symbolab Math Solver - Step by Step calculator
Description: Symbolab: equation search and math solver - solves algebra, trigonometry and calculus problems step by step
Keywords and Tags: algebra, business, calculus, computation, derivative calculator, domain calculator, equation search, factoring calculator, graphing calculator, implicit differentiation calculator, integral calculator, k12, limit calculator, math, pre-calc, simplify calculator, solver, step by step, symbolab, trig
Related Terms: bernoulli equation, copperknob step sheets, ellipse equation, linedance step sheets, quick step, recaptcha solver, regle equation avec fraction, step up surfboard, trigonometry help, two step
Fav Icon:
Age: Over 11 years old
Domain Created: 5th July, 2012
Domain Updated: 6th July, 2022
Domain Expires: 5th July, 2024
Review

Snoop Score

5/5 (Perfect!)

Valuation

$9,149,466 USD
Note: All valuation figures are estimates.

Popularity

Worldwide Sensation
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 1,894
Alexa Reach:
SEMrush Rank (US): 2,040
SEMrush Authority Score: 60
Moz Domain Authority: 55
Moz Page Authority: 47

Organic vs Paid (Google Ads)

Organic Paid
Keywords: 95,400 0
Traffic: 1,641,677 0
Cost: $1,013,400 USD $0 USD
Traffic

Visitors

Daily Visitors: 1,346,115
Monthly Visitors: 40,971,500
Yearly Visitors: 491,331,975
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $12,534 USD
Monthly Revenue: $381,480 USD
Yearly Revenue: $4,574,728 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Backlinks: 3,005,355
Referring Domains: 2,929
Referring IPs: 3,271
Symbolab.com has 3,005,355 backlinks according to SEMrush. 99% of these backlinks are "dofollow" (follow) links which allow the flow of link equity to pass through, which may improve symbolab.com's search engine rankings. Other links are treated as 'hints' by search engines and may also pass link equity, depending on what search engines decide in each case.
100% of symbolab.com's backlinks are text and image links, which are ideal for SEO. Other backlink types may be unrecognized or ignored by search engines.

Top New Follow Links

1
Source: https://granite.phys.s.u-tokyo.ac.jp/trac/Lab/ticket/7
Target: http://blog.symbolab.com/2015/01/advanced-math-solutions-integral.html?showComment=1589203891149#c2808699350308300126
2
Source: https://gnssn.iaea.org/main/sls/lists/2017%20survey%20pilot%20sls/summary.aspx
Target: http://blog.symbolab.com/2015/01/advanced-math-solutions-integral.html?showComment=1590043248819#c5743844634315517903
3
Source: https://gnssn.iaea.org/main/sls/lists/2017%20survey%20pilot%20sls/summary.aspx
Target: https://blog.symbolab.com/2015/01/advanced-math-solutions-integral_27.html?showComment=1589980701591#c7637652213211235440
4
Source: http://kinna.eclsummit.com/sign-chart-math-calculator/
Target: https://www.symbolab.com/public/images/Symbolab-Notebook.png
5
Source: http://ultima.domaregroup.com/find-integral-online/
Target: https://www.symbolab.com/public/images/Symbolab-Group-Study.png

Top Ranking Keywords (US)

1
Keyword: symbolab
Ranked Page: https://www.symbolab.com/
2
Keyword: limit calculator
Ranked Page: https://www.symbolab.com/solver/limit-calculator
3
Keyword: integral calculator
Ranked Page: https://www.symbolab.com/solver/integral-calculator
4
Keyword: derivative calculator
Ranked Page: https://www.symbolab.com/solver/derivative-calculator
5
Keyword: integral calculator
Ranked Page: https://www.symbolab.com/solver/definite-integral-calculator

Domain Analysis

Value Length
Domain: symbolab.com 12
Domain Name: symbolab 8
Extension (TLD): com 3
Expiry Check:

Page Speed Analysis

Average Load Time: 0.71 seconds
Load Time Comparison: Faster than 86% of sites

PageSpeed Insights

Avg. (All Categories) 61
Performance 64
Accessibility 63
Best Practices 83
SEO 75
PWA 22
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://pt.symbolab.com/
Updated: 28th November, 2022

0.94 seconds
First Contentful Paint (FCP)
91%
5%
4%

0.00 seconds
First Input Delay (FID)
98%
1%
1%

Simulate loading on desktop
64

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for symbolab.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Cumulative Layout Shift — 0.007
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Eliminate render-blocking resources — Potential savings of 130 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Symbolab.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.min.css
4444
230
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
3113
230
https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
34924
310
https://pt.symbolab.com/public/auto/main.min.js?082436
47251
200
Properly size images — Potential savings of 72 KiB
Images can slow down the page's load time. Symbolab.com should consider serving more appropriate-sized images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://pt.symbolab.com/public/images/home_right.png
61742
49489
https://pt.symbolab.com/public/images/home_left.png
30960
23824
Defer offscreen images — Potential savings of 11 KiB
Time to Interactive can be slowed down by resources on the page. Symbolab.com should consider lazy-loading offscreen and hidden images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://pt.symbolab.com/public/img/pad_matrixnxn.png
6016
6016
https://pt.symbolab.com/public/img/ajax-loader.gif
3208
3208
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
2323
2323
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Symbolab.com should consider minifying CSS files.
Minify JavaScript — Potential savings of 57 KiB
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Symbolab.com should consider minifying JS files.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.mjs
144064
58106
Reduce unused CSS — Potential savings of 36 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Symbolab.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} ...
18720
18420
https://pt.symbolab.com/public/auto/main.min.css?082434
21221
18154
Reduce unused JavaScript — Potential savings of 300 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202211100101/show_ads_impl_fy2021.js
120358
77439
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.mjs
144064
72247
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
87995
50092
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.min.js
73246
32365
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
76693
29449
https://pt.symbolab.com/public/auto/main.min.js?082436
47251
23787
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js
49757
22239
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats — Potential savings of 64 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://pt.symbolab.com/public/images/home_right.png
61742
44899.55
https://pt.symbolab.com/public/images/home_left.png
30960
20718.3
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 220 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://pt.symbolab.com/
218.251
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Symbolab.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 6 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
6536
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
URL Potential Savings (Ms)
https://pt.symbolab.com/public/images/home_left.png
0
Avoids enormous network payloads — Total size was 1,065 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.mjs
144064
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202211100101/show_ads_impl_fy2021.js
120358
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
87995
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
76693
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.min.js
73246
https://pt.symbolab.com/public/images/home_right.png
62436
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js
49898
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js
49757
https://pt.symbolab.com/public/auto/main.min.js?082436
47251
https://pt.symbolab.com/public/auto/font/Symbola-mq.ttf
45601
Avoid chaining critical requests — 14 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Symbolab.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Keep request counts low and transfer sizes small — 58 requests • 1,065 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
58
1090267
Script
20
755469
Image
12
123078
Font
5
96972
Other
12
49491
Document
6
36588
Stylesheet
3
28669
Media
0
0
Third-party
40
820871
Minimize third-party usage — Third-party code blocked the main thread for 90 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
271347
48.174
SHOW DETAILS
136277
29.085
SHOW DETAILS
34924
5.359
SHOW DETAILS
76693
3.531
SHOW DETAILS
227554
0
SHOW DETAILS
51371
0
SHOW DETAILS
21278
0
SHOW DETAILS
1427
0
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
body#home > div.nl-center > section#Codepad > img#home_left_img
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Element
body#home > div.nl-center > section#Codepad > img#home_left_img
Avoid large layout shifts — 5 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
© Course Hero Symbolab 2021 Página Inicial Novidades Blog Sobre Privacidade Coo…
0.0056264775413712
Página Inicial Novidades Blog Sobre Privacidade Cookies Termos Problemas popula…
0.00083775501269591
Calculadoras
0.00016010898522808
Caderno
0.00014257880436369
Novo Geometria
0.00013907276819081
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 7 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
1296
537
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js
2316
99
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202211100101/show_ads_impl_fy2021.js
2535
68
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
2120
62
Unattributable
2059
61
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
1147
59
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
1907
55
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of symbolab.com on mobile screens.
Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Audits

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://symbolab.com/
http/1.1
0
74.625999899581
731
0
302
text/plain
http://www.symbolab.com/
http/1.1
75.005999999121
129.77900006808
671
0
301
text/plain
https://www.symbolab.com/
http/1.1
130.09899994358
283.72099995613
1050
0
302
text/plain
https://pt.symbolab.com/
h2
284.08499993384
501.3419999741
22494
93565
200
text/html
Document
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
h2
525.47500003129
545.20899988711
3113
5793
200
application/x-javascript
Script
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
h2
525.65700002015
543.67899987847
8030
21748
200
application/javascript
Script
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
h2
730.42999999598
776.91000001505
76693
218088
200
application/javascript
Script
https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
h2
525.74099996127
539.04499998316
34924
94840
200
text/javascript
Script
https://pt.symbolab.com/public/auto/main.min.js?082436
h2
525.81899985671
639.51699994504
47251
160973
200
application/javascript
Script
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.min.css
h2
525.90800006874
544.89500005729
4444
23113
200
text/css
Stylesheet
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.min.js
h2
730.50799989142
756.75199995749
73246
264762
200
application/javascript
Script
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/contrib/auto-render.min.js
h2
730.63899995759
754.03499999084
2538
3323
200
application/javascript
Script
https://pt.symbolab.com/public/auto/main.min.css?082434
h2
532.69300004467
640.06799994968
21221
95341
200
text/css
Stylesheet
https://pt.symbolab.com/public/images/search.png
h2
730.72299989872
789.58799992688
1876
1186
200
image/png
Image
https://pt.symbolab.com/public/auto/Application_index.min.css?082425
h2
663.89500000514
721.68800001964
3004
9906
200
text/css
Stylesheet
https://pt.symbolab.com/public/auto/Application_index.min.js?082426
h2
677.29400005192
754.65100002475
6522
16141
200
application/javascript
Script
https://pt.symbolab.com/public/images/home_left.png
h2
730.79900001176
844.950000057
31660
30960
200
image/png
Image
https://pt.symbolab.com/public/images/home_right.png
h2
735.79499986954
804.63699996471
62436
61742
200
image/png
Image
https://pt.symbolab.com/public/img/ajax-loader.gif
h2
735.98599992692
875.01499988139
3902
3208
200
image/gif
Image
https://pt.symbolab.com/public/img/pad_matrixnxn.png
h2
746.08900002204
854.91200000979
6723
6016
200
image/png
Image
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js
h2
746.53499992564
777.81099989079
49757
146021
200
text/javascript
Script
https://pt.symbolab.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js
h2
730.23699992336
814.9759999942
1396
1239
200
application/javascript
Script
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/28cd3f47-fef1-4429-be4b-ff2acc7f492b.json
h2
629.58199996501
663.01300004125
2439
3619
200
application/x-javascript
XHR
https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location
h2
677.13199998252
722.08800003864
447
59
200
application/json
XHR
https://fonts.gstatic.com/s/ubuntu/v15/4iCs6KVjbNBYlgoKfw72nU6AFw.woff2
h2
755.99700002931
763.33200000226
14648
13720
200
font/woff2
Font
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
h2
814.83799987473
875.9260000661
87995
368186
200
application/javascript
Script
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/contrib/auto-render.mjs
h2
834.87699995749
859.48099987581
3262
6088
200
application/javascript
Script
https://fonts.gstatic.com/s/ubuntu/v15/4iCv6KVjbNBYlgoCxCvjsGyNPYZvgw.woff2
h2
932.60199995711
937.99500004388
15024
14096
200
font/woff2
Font
https://fonts.gstatic.com/s/ubuntu/v15/4iCu6KVjbNBYlgoKej70l0miFYxn.woff2
h2
1094.4189999718
1099.1980000399
15088
14148
200
font/woff2
Font
https://pt.symbolab.com/public/images/calculator.png
h2
1823.2249999419
1856.9869999774
2598
1900
200
image/png
Image
https://pt.symbolab.com/public/img/icons-symbolab.png
h2
1823.8609998953
1884.3930000439
8217
7518
200
image/png
Image
https://pt.symbolab.com/public/auto/font/Symbola-mq.ttf
h2
1830.8820000384
1870.0250000693
45601
44888
200
application/octet-stream
Font
https://fonts.gstatic.com/s/ubuntu/v15/4iCv6KVjbNBYlgoCxCvjs2yNPYZvg7UI.woff2
h2
1998.6529999878
2203.6069999449
6611
5672
200
font/woff2
Font
https://pt.symbolab.com/public/images/sprite_social.png?113
h2
2112.564999843
2159.4879999757
2043
1347
200
image/png
Image
https://www.google-analytics.com/g/collect?v=2&tid=G-X78WH5ZJPD&gtm=2oeb90&_p=227856871&cid=751031958.1669664498&ul=en-us&sr=800x600&uaa=x86&uab=&uafvl=&uamb=0&uam=&uap=macOS&uapv=10.15.7&uaw=0&_s=1&sid=1669664497&sct=1&seg=0&dl=https%3A%2F%2Fpt.symbolab.com%2F&dt=Solucionador%20matem%C3%A1tico%20Symbolab%20-%20calculadora%20passo%20a%20passo&en=page_view&_fv=2&_nsi=1&_ss=2&_ee=1
2332.9669998493
2376.8609999679
0
0
-1
Ping
https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.mjs
h2
2354.9180000555
2415.7169999089
144064
587074
200
application/javascript
Script
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/2a38f731-113f-47f0-b90d-db2fdd0f053d/en.json
h2
2361.4529999904
2387.8719999921
9547
36840
200
application/x-javascript
Fetch
https://cdn.cookielaw.org/scripttemplates/6.35.0/assets/otCenterRounded.json
h2
2459.5939998981
2475.2759998664
3458
9507
200
application/json
Fetch
https://cdn.cookielaw.org/scripttemplates/6.35.0/assets/v2/otPcCenter.json
h2
2459.7819999326
2489.29399997
13848
60295
200
application/json
Fetch
https://cdn.cookielaw.org/scripttemplates/6.35.0/assets/otCommonStyles.css
h2
2459.8649998661
2481.1259999406
5077
21866
200
text/css
Fetch
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Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
506.93
36.847
544.835
10.551
566.075
59.325
625.986
29.481
674.164
41.334
715.583
22.55
738.148
36.107
774.39
10.577
784.975
10.664
798.966
17.971
818.845
7.655
826.509
11.238
837.983
27.215
865.876
89.402
956.933
25.285
982.246
18.715
1009.593
13.98
1023.871
9.465
1035.955
1074.999
2111.559
14.327
2126.053
24.159
2155.512
12.241
2167.817
12.108
2179.937
26.626
2209.333
39.39
2248.894
31.594
2281.59
54.797
2337.325
15.103
2354.514
10.8
2365.433
12.452
2378.949
17.472
2401.003
61.155
2500.189
7.669
2508.7
14.539
2523.253
86.829
2614.126
123.093
2737.252
18.835
2773.927
16.931
2790.902
23.872
2815.475
5.945
2821.63
197.64
3019.309
11.334
3060.674
13.515
3074.209
23.496
3105.527
12.274
3118.342
7.782
3198.359
136.43
3334.819
12.839
3347.773
38.086
3386.832
12.594
3400.483
5.398
3405.918
9.177
3415.407
12.357
3457.844
31.925
3489.86
5.603
3499.819
10.268
3524.031
10.512
3535.248
5.786
3546.208
35.447
3581.698
7.715
3593.428
11.537
3606.327
13.127
3624.439
12.035
3640.393
16.248
3658.305
11.591
3677.063
36.361
3713.446
7.957
3724.581
8.036
3738.929
12.698
3756.634
21.245
3777.93
12.913
3801.447
12.807
3818.253
14.094
3836.057
44.087
3882.589
15.681
3898.287
40.329
3938.674
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28.5
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Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

First Contentful Paint — 1.2 s
The time taken for the first image or text on the page to be rendered.
Time to Interactive — 2.7 s
The time taken for the page to become fully interactive.
Speed Index — 1.6 s
The time taken for the page contents to be visibly populated.
Largest Contentful Paint — 1.6 s
The timing of the largest text or image that is painted.

Audits

First Meaningful Paint — 1.5 s
The time taken for the primary content of the page to be rendered.

Other

Avoid multiple page redirects — Potential savings of 530 ms
Redirects can cause additional delays before the page can begin loading. Symbolab.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://symbolab.com/
190
http://www.symbolab.com/
190
https://www.symbolab.com/
150
https://pt.symbolab.com/
0
Serve static assets with an efficient cache policy — 19 resources found
Symbolab.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://www.google-analytics.com/analytics.js
7200000
20664
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
86400000
87995
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
86400000
8030
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
86400000
3113
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
86400000
2323
https://pt.symbolab.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js
172800000
1396
https://pt.symbolab.com/public/images/home_right.png
604800000
62436
https://pt.symbolab.com/public/auto/main.min.js?082436
604800000
47251
https://pt.symbolab.com/public/auto/font/Symbola-mq.ttf
604800000
45601
https://pt.symbolab.com/public/images/home_left.png
604800000
31660
https://pt.symbolab.com/public/auto/main.min.css?082434
604800000
21221
https://pt.symbolab.com/public/img/icons-symbolab.png
604800000
8217
https://pt.symbolab.com/public/img/pad_matrixnxn.png
604800000
6723
https://pt.symbolab.com/public/auto/Application_index.min.js?082426
604800000
6522
https://pt.symbolab.com/public/img/ajax-loader.gif
604800000
3902
https://pt.symbolab.com/public/auto/Application_index.min.css?082425
604800000
3004
https://pt.symbolab.com/public/images/calculator.png
604800000
2598
https://pt.symbolab.com/public/images/sprite_social.png?113
604800000
2043
https://pt.symbolab.com/public/images/search.png
604800000
1876
Reduce JavaScript execution time — 1.8 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://pt.symbolab.com/
1245.49
831.332
5.419
Unattributable
369.717
61.689
0
https://tpc.googlesyndication.com/sodar/sodar2/225/runner.html
308.073
287.801
3.016
https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
299.913
82.887
3.342
https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js
197.64
61.042
9.89
https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202211100101/show_ads_impl_fy2021.js
188.831
159.721
14.66
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
138.26
115.451
11.554
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
103.992
93.515
4.796
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
69.767
59.623
0.457
Minimize main-thread work — 3.3 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
1977.53
Other
384.219
Style & Layout
309.082
Garbage Collection
253.767
Rendering
121.512
Parse HTML & CSS
113.854
Script Parsing & Compilation
100.453

Metrics

Total Blocking Time — 580 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Audits

Max Potential First Input Delay — 540 ms
Users could experience a delay when interacting with the page.

Other

Avoid an excessive DOM size — 2,205 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
2205
Maximum DOM Depth
☐
21
Maximum Child Elements
Ver Tudo alternada área assíntotas derivada derivada implícita domínio expandir…
30
Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://pt.symbolab.com/public/auto/font/Symbola-mq.ttf
39.14300003089
63

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of symbolab.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Symbolab.com may provide assistance to deaf or hearing-impaired users with captions on videos.

ARIA

`[aria-*]` attributes do not match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
Failing Elements
Advertisement

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
Novo
FAZER UPGRADE
© Course Hero Symbolab 2021
Página Inicial
Novidades
Blog
Sobre
Privacidade
Cookies
Termos
Problemas populares
Ajuda
FEEDBACK
Entendi

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements
section#googleAdSenseHomepage > ins.adsbygoogle > div#aswift_0_host > iframe#aswift_0
Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
body#home > div.nl-center > section#Codepad > img#home_left_img
body#home > div.nl-center > section#Codepad > img#home_right_img
Form elements do not have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Failing Elements
div.codepad-input > span#main-input > span.textarea > textarea
Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

Best practices

`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.
Failing Elements
head > meta

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
83

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that symbolab.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
1.7.2
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
URL Map URL
https://pagead2.googlesyndication.com/bg/api979c0EJY6QQNrS8TSWwgKrshdt-vRMqEtOqF-hYY.js
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 2 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://symbolab.com/
Allowed
http://www.symbolab.com/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 6 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
6
Medium
75

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for symbolab.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of symbolab.com on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 1 link found
Make use of descriptive link text to assist search engines in understanding the content.
Image elements do not have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Failing Elements
body#home > div.nl-center > section#Codepad > img#home_left_img
body#home > div.nl-center > section#Codepad > img#home_right_img

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
22

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of symbolab.com. This includes details about web app manifests.

PWA Optimized

Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of symbolab.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 67
Performance 50
Accessibility 87
Best Practices 83
SEO 86
PWA 30
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.symbolab.com/
Updated: 28th November, 2022

1.70 seconds
First Contentful Paint (FCP)
78%
12%
10%

0.02 seconds
First Input Delay (FID)
95%
3%
2%

Simulate loading on mobile
50

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for symbolab.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Cumulative Layout Shift — 0.091
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Properly size images
Images can slow down the page's load time. Symbolab.com should consider serving more appropriate-sized images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Symbolab.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Symbolab.com should consider minifying JS files.
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 110 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.symbolab.com/
108.971
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Symbolab.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 6 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
6536
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.
Avoids enormous network payloads — Total size was 561 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
87995
https://www.symbolab.com/public/images/phones_images.webp
85678
https://www.symbolab.com/public/auto/mobile_mobile_web.min.js?082459
77577
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
76694
https://www.symbolab.com/public/auto/font/Symbola-mq.ttf
45595
https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
34924
https://www.symbolab.com/public/auto/mobile_mobile_web.min.css?082457
28749
https://www.google-analytics.com/analytics.js
20664
https://fonts.gstatic.com/s/ubuntu/v15/4iCv6KVjbNBYlgoCxCvjsGyNPYZvgw.woff2
15024
https://fonts.gstatic.com/s/ubuntu/v15/4iCs6KVjbNBYlgoKfw72nU6AFw.woff2
14648
Avoids an excessive DOM size — 586 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
586
Maximum DOM Depth
Name
15
Maximum Child Elements
prove tan2(x)−sin2(x)=tan2(x)sin2(x)
17
Avoid chaining critical requests — 8 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Symbolab.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Keep request counts low and transfer sizes small — 28 requests • 561 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
28
574326
Script
7
308997
Image
4
94515
Font
4
89783
Other
11
37762
Stylesheet
1
28749
Document
1
14520
Media
0
0
Third-party
18
313380
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Solve problems from Pre Algebra to Calculus step-by-step
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Avoid large layout shifts — 5 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
prove tan2(x)−sin2(x)=tan2(x)sin2(x)
0.021705813168834
d dx  ( 3x+9 2−x  )
0.019618226994601
f(x)=x3
0.01518603502829
x2−x−6=0
0.015181240094642
line (1, 2), (3, 1)
0.012526285211628
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 12 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
4525
666
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
4338
187
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
5622
140
https://www.symbolab.com/public/auto/mobile_mobile_web.min.js?082459
4140
123
https://www.google-analytics.com/analytics.js
6242
105
Unattributable
5530
92
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
3324
86
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
4263
75
https://www.symbolab.com/
1794
62
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
5468
62
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
2616
59
https://www.symbolab.com/
1740
54
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Image elements have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of symbolab.com on mobile screens.
Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Audits

Network Requests
Below is a list of network requests that were made during page load.
URL Protocol Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://symbolab.com/
http/1.1
0
75.007000006735
739
0
302
text/plain
http://www.symbolab.com/
http/1.1
75.477000093088
135.65699988976
684
0
301
text/plain
https://www.symbolab.com/
h2
136.05799991637
244.03599998914
14520
42083
200
text/html
Document
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
h2
256.91600004211
283.36500003934
3113
5793
200
application/x-javascript
Script
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
h2
257.17099988833
284.72499991767
8030
21748
200
application/javascript
Script
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
h2
352.99300006591
374.34499990195
76694
218088
200
application/javascript
Script
https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
h2
257.44400010444
264.03399999253
34924
94840
200
text/javascript
Script
https://www.symbolab.com/public/auto/mobile_mobile_web.min.js?082459
h2
257.68100004643
360.54000002332
77577
271516
200
application/javascript
Script
https://www.symbolab.com/public/auto/mobile_mobile_web.min.css?082457
h2
257.98700004816
350.97200004384
28749
130182
200
text/css
Stylesheet
https://www.symbolab.com/public/images/en_android_app.svg
h2
377.11800006218
446.11899997108
2612
5021
200
image/svg+xml
Image
https://www.symbolab.com/public/img/ajax-loader.gif
h2
410.31800000928
442.99599993974
3902
3208
200
image/gif
Image
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/28cd3f47-fef1-4429-be4b-ff2acc7f492b.json
h2
297.6090000011
319.91000007838
2439
3619
200
application/x-javascript
XHR
https://geolocation.onetrust.com/cookieconsentpub/v1/geo/location
h2
323.66500003263
365.20599992946
465
75
200
application/json
XHR
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
h2
417.80699999072
448.11700005084
87995
368186
200
application/javascript
Script
https://fonts.gstatic.com/s/ubuntu/v15/4iCs6KVjbNBYlgoKfw72nU6AFw.woff2
h2
434.62900002487
439.54299995676
14648
13720
200
font/woff2
Font
https://fonts.gstatic.com/s/ubuntu/v15/4iCv6KVjbNBYlgoCxCvjsGyNPYZvgw.woff2
h2
434.98199991882
439.06900007278
15024
14096
200
font/woff2
Font
https://fonts.gstatic.com/s/ubuntu/v15/4iCv6KVjbNBYlgoC1CzjsGyNPYZvgw.woff2
h2
435.21000002511
439.84099989757
14516
13588
200
font/woff2
Font
https://www.google-analytics.com/g/collect?v=2&tid=G-X78WH5ZJPD&gtm=2oeb90&_p=1301986889&cid=344836269.1669664527&ul=en-us&sr=360x640&uaa=&uab=&uafvl=&uamb=1&uam=Moto%20G4&uap=Android&uapv=6.0&uaw=0&_s=1&sid=1669664526&sct=1&seg=0&dl=https%3A%2F%2Fwww.symbolab.com%2F&dt=Step-by-Step%20Calculator%20-%20Symbolab&en=page_view&_fv=2&_nsi=1&_ss=2&_ee=1
543.80899993703
578.25900008902
0
0
-1
Ping
https://www.symbolab.com/detailedLog
h2
590.37399990484
652.94699999504
890
0
200
text/plain
XHR
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/2a38f731-113f-47f0-b90d-db2fdd0f053d/en.json
h2
606.42299987376
640.73299989104
9547
36840
200
application/x-javascript
Fetch
https://www.symbolab.com/public/auto/font/Symbola-mq.ttf
h2
646.19900006801
729.9790000543
45595
44888
200
application/octet-stream
Font
https://www.symbolab.com/public/images/phones_images.webp
h2
941.45400007255
992.32499999925
85678
84974
200
image/webp
Image
https://cdn.cookielaw.org/scripttemplates/6.35.0/assets/otCenterRounded.json
h2
988.92499995418
1013.2569998968
3458
9507
200
application/json
Fetch
https://cdn.cookielaw.org/scripttemplates/6.35.0/assets/v2/otPcCenter.json
h2
989.87599997781
1027.349999873
13848
60295
200
application/json
Fetch
https://cdn.cookielaw.org/scripttemplates/6.35.0/assets/otCommonStyles.css
h2
990.62799988315
1014.0120000578
5077
21866
200
text/css
Fetch
https://www.google-analytics.com/analytics.js
h2
1051.1890000198
1056.173000019
20664
50230
200
text/javascript
Script
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
h2
1101.1449999642
1125.0769998878
2323
2998
200
image/svg+xml
Image
https://www.google-analytics.com/j/collect?v=1&_v=j98&a=1301986889&t=pageview&_s=1&dl=https%3A%2F%2Fwww.symbolab.com%2F&ul=en-us&de=UTF-8&dt=Step-by-Step%20Calculator%20-%20Symbolab&sd=24-bit&sr=360x640&vp=360x640&je=0&_u=IADAAAABAAAAACAAI~&jid=1727983722&gjid=801731583&cid=344836269.1669664527&tid=UA-34703521-1&_gid=945393178.1669664527&_r=1&_slc=1&z=1242072643
h2
1135.8999998774
1140.50400001
615
2
200
text/plain
XHR
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
249.814
13.399
291.274
7.631
298.916
21.573
380.357
30.686
412.979
10.384
423.378
30.92
454.363
18.65
481.968
7.426
490.889
8.514
500.015
46.67
546.729
14.856
561.986
7.336
573.716
5.302
582.425
9.821
592.335
15.484
609.499
333.105
942.66
5.438
952.112
13.978
969.173
22.899
996.083
5.124
1032.32
69.835
1111.291
26.28
1138.158
9.843
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

Time to Interactive — 6.4 s
The time taken for the page to become fully interactive.
Speed Index — 3.7 s
The time taken for the page contents to be visibly populated.

Audits

First Meaningful Paint — 3.7 s
The time taken for the primary content of the page to be rendered.

Other

Eliminate render-blocking resources — Potential savings of 540 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Symbolab.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
3113
780
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
8030
300
https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
34924
1380
https://www.symbolab.com/public/auto/mobile_mobile_web.min.js?082459
77577
1350
Defer offscreen images — Potential savings of 88 KiB
Time to Interactive can be slowed down by resources on the page. Symbolab.com should consider lazy-loading offscreen and hidden images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://www.symbolab.com/public/images/phones_images.webp
84974
84974
https://www.symbolab.com/public/img/ajax-loader.gif
3208
3208
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
2323
2323
Reduce unused CSS — Potential savings of 45 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Symbolab.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.symbolab.com/public/auto/mobile_mobile_web.min.css?082457
28749
27389
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} ...
18720
18404
Reduce unused JavaScript — Potential savings of 140 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.symbolab.com/public/auto/mobile_mobile_web.min.js?082459
77577
62073
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
87995
50101
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
76694
31326
Serve static assets with an efficient cache policy — 11 resources found
Symbolab.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://www.google-analytics.com/analytics.js
7200000
20664
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
86400000
87995
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
86400000
8030
https://cdn.cookielaw.org/consent/28cd3f47-fef1-4429-be4b-ff2acc7f492b/OtAutoBlock.js
86400000
3113
https://cdn.cookielaw.org/logos/static/poweredBy_ot_logo.svg
86400000
2323
https://www.symbolab.com/public/images/phones_images.webp
604800000
85678
https://www.symbolab.com/public/auto/mobile_mobile_web.min.js?082459
604800000
77577
https://www.symbolab.com/public/auto/font/Symbola-mq.ttf
604800000
45595
https://www.symbolab.com/public/auto/mobile_mobile_web.min.css?082457
604800000
28749
https://www.symbolab.com/public/img/ajax-loader.gif
604800000
3902
https://www.symbolab.com/public/images/en_android_app.svg
604800000
2612
Reduce JavaScript execution time — 2.0 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
1410.416
849.34
7.692
https://www.symbolab.com/
731.556
138.004
13.704
Unattributable
386.164
101.864
0
https://cdn.cookielaw.org/scripttemplates/6.35.0/otBannerSdk.js
341.432
258.352
46.968
https://www.googletagmanager.com/gtag/js?id=G-X78WH5ZJPD
294.976
260.988
17.376
https://www.symbolab.com/public/auto/mobile_mobile_web.min.js?082459
122.744
86.908
26.044
https://www.google-analytics.com/analytics.js
110.408
100.612
5.292
https://cdn.cookielaw.org/scripttemplates/otSDKStub.js
55.144
45.204
1.824
Minimize main-thread work — 3.5 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
1874.692
Style & Layout
739.028
Other
440.944
Parse HTML & CSS
174.756
Script Parsing & Compilation
120.048
Rendering
119.872
Garbage Collection
20.872

Metrics

First Contentful Paint — 3.7 s
The time taken for the first image or text on the page to be rendered.
Total Blocking Time — 1,050 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Largest Contentful Paint — 4.2 s
The timing of the largest text or image that is painted.

Audits

Max Potential First Input Delay — 670 ms
Users could experience a delay when interacting with the page.

Other

Avoid multiple page redirects — Potential savings of 1,260 ms
Redirects can cause additional delays before the page can begin loading. Symbolab.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://symbolab.com/
630
http://www.symbolab.com/
630
https://www.symbolab.com/
0
Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://www.symbolab.com/public/auto/font/Symbola-mq.ttf
83.779999986291
Reduce the impact of third-party code — Third-party code blocked the main thread for 1,000 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
34924
728.916
SHOW DETAILS
76694
140.408
SHOW DETAILS
136295
83.82
SHOW DETAILS
21279
47.428
SHOW DETAILS
44188
0
First Contentful Paint (3G) — 7620 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.
87

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of symbolab.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
Heading elements appear in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
`<object>` elements have alternate text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Contrast

Background and foreground colors have a sufficient contrast ratio
Many (if not most) users find low-contrast text difficult or impossible to read.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Symbolab.com may provide assistance to deaf or hearing-impaired users with captions on videos.

Names and labels

Links do not have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.

Best practices

`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.
Failing Elements
head > meta

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
83

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that symbolab.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
1.7.2
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 2 insecure requests found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://symbolab.com/
Allowed
http://www.symbolab.com/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 6 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
SHOW DETAILS
6
Medium
86

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for symbolab.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of symbolab.com on mobile screens.
Document uses legible font sizes — 99.53% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
SHOW DETAILS
.mathquill-rendered-math *
0.47%
11.776px
SHOW DETAILS
99.53%
≥ 12px
Tap targets are sized appropriately — 100% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 1 link found
Make use of descriptive link text to assist search engines in understanding the content.

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
30

PWA

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of symbolab.com. This includes details about web app manifests.

PWA Optimized

Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of symbolab.com on mobile screens.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Does not provide a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 104.18.2.44
Continent:
Country:
Region:
City:
Longitude:
Latitude:
Currencies:
Languages:

Web Hosting Provider

Name IP Address
Cloudflare, Inc.
Registration

Domain Registrant

Private Registration: Yes
Name: Registration Private
Organization: Domains By Proxy, LLC
Country: US
City: Tempe
State: Arizona
Post Code: 85284
Email:
Phone: +1.4806242599
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Name IP Address
GoDaddy.com, LLC 23.6.68.27
Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Unknown
WOT Rating:
WOT Trustworthiness: 94/100
WOT Child Safety: 94/100
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: sni.cloudflaressl.com
Issued By: Cloudflare Inc ECC CA-3
Valid From: 2nd June, 2022
Valid To: 1st June, 2023
Subject: CN = sni.cloudflaressl.com
O = Cloudflare, Inc.
L = San Francisco
S = US
Hash: c959965e
Issuer: CN = Cloudflare Inc ECC CA-3
O = Cloudflare, Inc.
S = US
Version: 2
Serial Number: 4341483404206047624066641954281627557
Serial Number (Hex): 034423A873AFF65A9F7DE89B6D381FA5
Valid From: 2nd June, 2024
Valid To: 1st June, 2024
Signature Algorithm (Short Name): ecdsa-with-SHA256
Signature Algorithm (Long Name): ecdsa-with-SHA256
Authority Key Identifier: keyid:A5:CE:37:EA:EB:B0:75:0E:94:67:88:B4:45:FA:D9:24:10:87:96:1F
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
CRL Distribution Points:
Full Name:
URI:http://crl3.digicert.com/CloudflareIncECCCA-3.crl

Full Name:
URI:http://crl4.digicert.com/CloudflareIncECCCA-3.crl
Certificate Policies: Policy: 2.23.140.1.2.2
CPS: http://www.digicert.com/CPS
Authority Information Access: OCSP - URI:http://ocsp.digicert.com
CA Issuers - URI:http://cacerts.digicert.com/CloudflareIncECCCA-3.crt
SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : E8:3E:D0:DA:3E:F5:06:35:32:E7:57:28:BC:89:6B:C9:
03:D3:CB:D1:11:6B:EC:EB:69:E1:77:7D:6D:06:BD:6E
Timestamp : Jun 2 08:22:04.421 2022 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:A3:6B:16:7E:1E:6C:CA:26:C2:64:15:
5C:2C:80:42:BA:77:D4:46:80:3A:71:62:8F:78:01:E6:
1E:A5:9B:6F:5D:02:20:71:C7:2E:8C:71:95:8F:B9:FF:
EE:B3:1C:86:F4:73:5E:EE:6D:91:48:18:A8:5C:14:D7:
A5:E8:E0:FD:5F:4A:01
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 35:CF:19:1B:BF:B1:6C:57:BF:0F:AD:4C:6D:42:CB:BB:
B6:27:20:26:51:EA:3F:E1:2A:EF:A8:03:C3:3B:D6:4C
Timestamp : Jun 2 08:22:04.483 2022 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:9A:AC:F1:27:14:AC:6B:17:AA:15:53:
C6:A4:32:A8:46:7D:C3:2C:88:69:4B:4E:03:23:D7:F3:
DA:54:89:D1:CD:02:21:00:E9:73:09:DD:61:38:B0:57:
F3:1F:70:9E:52:5D:07:26:E8:5C:04:68:E4:21:D1:2C:
A5:AB:2D:61:28:F2:88:BB
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : B7:3E:FB:24:DF:9C:4D:BA:75:F2:39:C5:BA:58:F4:6C:
5D:FC:42:CF:7A:9F:35:C4:9E:1D:09:81:25:ED:B4:99
Timestamp : Jun 2 08:22:04.503 2022 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:44:02:20:20:77:15:C5:94:91:6A:82:9D:34:CA:9D:
A9:E2:3A:9B:A2:43:92:66:1A:1C:07:F8:7C:7D:42:5F:
12:C5:CE:07:02:20:02:C3:F9:B5:CC:5E:6B:EB:1E:89:
5E:72:DC:01:BE:9E:2E:0B:08:A6:37:55:A0:95:32:2A:
12:A3:0F:A1:57:36
Key Usage: Digital Signature
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:*.symbolab.com
DNS:sni.cloudflaressl.com
DNS:symbolab.com
Technical

DNS Lookup

HTTP Response Headers

HTTP-Code: HTTP/1.1 200 OK
Date: 22nd March, 2023
Content-Type: text/html; charset=utf-8
Cache-Control: no-cache
Server: cloudflare
Connection: keep-alive
X-Frame-Options: DENY
Set-Cookie: *
CF-Cache-Status: DYNAMIC
CF-RAY: 7ac10a0a0b8b191b-EWR

Whois Lookup

Created: 5th July, 2012
Changed: 6th July, 2022
Expires: 5th July, 2024
Registrar: GoDaddy.com, LLC
Status: clientTransferProhibited
clientUpdateProhibited
clientRenewProhibited
clientDeleteProhibited
Nameservers: amy.ns.cloudflare.com
gabe.ns.cloudflare.com
Owner Name: Registration Private
Owner Organization: Domains By Proxy, LLC
Owner Street: DomainsByProxy.com
2155 E Warner Rd
Owner Post Code: 85284
Owner City: Tempe
Owner State: Arizona
Owner Country: US
Owner Phone: +1.4806242599
Owner Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SYMBOLAB.COM
Admin Name: Registration Private
Admin Organization: Domains By Proxy, LLC
Admin Street: DomainsByProxy.com
2155 E Warner Rd
Admin Post Code: 85284
Admin City: Tempe
Admin State: Arizona
Admin Country: US
Admin Phone: +1.4806242599
Admin Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SYMBOLAB.COM
Tech Name: Registration Private
Tech Organization: Domains By Proxy, LLC
Tech Street: DomainsByProxy.com
2155 E Warner Rd
Tech Post Code: 85284
Tech City: Tempe
Tech State: Arizona
Tech Country: US
Tech Phone: +1.4806242599
Tech Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SYMBOLAB.COM
Full Whois: Domain Name: SYMBOLAB.COM
Registry Domain ID: 1731774820_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: https://www.godaddy.com
Updated Date: 2022-07-06T14:33:37Z
Creation Date: 2012-07-05T04:19:18Z
Registrar Registration Expiration Date: 2024-07-05T04:19:18Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: +1.4806242505
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Registry Registrant ID: Not Available From Registry
Registrant Name: Registration Private
Registrant Organization: Domains By Proxy, LLC
Registrant Street: DomainsByProxy.com
Registrant Street: 2155 E Warner Rd
Registrant City: Tempe
Registrant State/Province: Arizona
Registrant Postal Code: 85284
Registrant Country: US
Registrant Phone: +1.4806242599
Registrant Phone Ext:
Registrant Fax: +1.4806242598
Registrant Fax Ext:
Registrant Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SYMBOLAB.COM
Registry Admin ID: Not Available From Registry
Admin Name: Registration Private
Admin Organization: Domains By Proxy, LLC
Admin Street: DomainsByProxy.com
Admin Street: 2155 E Warner Rd
Admin City: Tempe
Admin State/Province: Arizona
Admin Postal Code: 85284
Admin Country: US
Admin Phone: +1.4806242599
Admin Phone Ext:
Admin Fax: +1.4806242598
Admin Fax Ext:
Admin Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SYMBOLAB.COM
Registry Tech ID: Not Available From Registry
Tech Name: Registration Private
Tech Organization: Domains By Proxy, LLC
Tech Street: DomainsByProxy.com
Tech Street: 2155 E Warner Rd
Tech City: Tempe
Tech State/Province: Arizona
Tech Postal Code: 85284
Tech Country: US
Tech Phone: +1.4806242599
Tech Phone Ext:
Tech Fax: +1.4806242598
Tech Fax Ext:
Tech Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SYMBOLAB.COM
Name Server: AMY.NS.CLOUDFLARE.COM
Name Server: GABE.NS.CLOUDFLARE.COM
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2023-03-22T20:03:40Z <<<
For more information on Whois status codes, please visit https://icann.org/epp

TERMS OF USE: The data contained in this registrar's Whois database, while believed by the
registrar to be reliable, is provided "as is" with no guarantee or warranties regarding its
accuracy. This information is provided for the sole purpose of assisting you in obtaining
information about domain name registration records. Any use of this data for any other purpose
is expressly forbidden without the prior written permission of this registrar. By submitting
an inquiry, you agree to these terms and limitations of warranty. In particular, you agree not
to use this data to allow, enable, or otherwise support the dissemination or collection of this
data, in part or in its entirety, for any purpose, such as transmission by e-mail, telephone,
postal mail, facsimile or other means of mass unsolicited, commercial advertising or solicitations
of any kind, including spam. You further agree not to use this data to enable high volume, automated
or robotic electronic processes designed to collect or compile this data for any purpose, including
mining this data for your own personal or commercial purposes. Failure to comply with these terms
may result in termination of access to the Whois database. These terms may be subject to modification
at any time without notice.
View Raw Whois

Nameservers

Name IP Address
amy.ns.cloudflare.com 172.64.32.101
gabe.ns.cloudflare.com 108.162.193.114
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