Tools & Wizards About Us

Report Summary

  • 52

    Performance

    Renders faster than
    69% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

mathjs.org

math.js | an extensive math library for JavaScript and Node.js

Page Load Speed

567 ms in total

First Response

72 ms

Resources Loaded

356 ms

Page Rendered

139 ms

About Website

Click here to check amazing Math Js content for India. Otherwise, check out these important facts you probably never knew about mathjs.org

Math.js is an extensive math library for JavaScript and Node.js. It features big numbers, complex numbers, matrices, units, and a flexible expression parser.

Visit mathjs.org

Key Findings

We analyzed Mathjs.org page load time and found that the first response time was 72 ms and then it took 495 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

mathjs.org performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

99/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

78/100

25%

SI (Speed Index)

Value3.6 s

87/100

10%

TBT (Total Blocking Time)

Value790 ms

37/100

30%

CLS (Cumulative Layout Shift)

Value0.868

4/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

mathjs.org

72 ms

mathjs.org

38 ms

style.css

19 ms

commandline.css

39 ms

code.css

36 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 48% of them (12 requests) were addressed to the original Mathjs.org, 16% (4 requests) were made to Google.com and 8% (2 requests) were made to Buttons.github.io. The less responsive or slowest element that took the longest time to load (157 ms) relates to the external source Platform.twitter.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 40.0 kB (11%)

Content Size

368.9 kB

After Optimization

328.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mathjs.org main page is 368.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Javascripts take 268.4 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 25.3 kB

  • Original 33.1 kB
  • After minification 32.5 kB
  • After compression 7.8 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 25.3 kB or 76% of the original size.

Image Optimization

-9%

Potential reduce by 4.9 kB

  • Original 56.9 kB
  • After minification 52.1 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Math Js images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 6.5 kB

  • Original 268.4 kB
  • After minification 268.1 kB
  • After compression 261.9 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.

CSS Optimization

-32%

Potential reduce by 3.3 kB

  • Original 10.4 kB
  • After minification 10.4 kB
  • After compression 7.1 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Mathjs.org needs all CSS files to be minified and compressed as it can save up to 3.3 kB or 32% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (68%)

Requests Now

22

After Optimization

7

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Math Js. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

mathjs.org accessibility score

86

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

<frame> or <iframe> elements do not have a title

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

mathjs.org best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

mathjs.org SEO score

92

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mathjs.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Mathjs.org main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph description is not detected on the main page of Math Js. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: