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usejsdoc.org screenshot

Report Summary

  • 76

    Performance

    Renders faster than
    84% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

usejsdoc.org

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Page Load Speed

668 ms in total

First Response

120 ms

Resources Loaded

229 ms

Page Rendered

319 ms

usejsdoc.org screenshot

About Website

Welcome to usejsdoc.org homepage info - get ready to check Usejsdoc best content for United States right away, or after learning these important things about usejsdoc.org

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Key Findings

We analyzed Usejsdoc.org page load time and found that the first response time was 120 ms and then it took 548 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

usejsdoc.org performance score

76

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value4.1 s

79/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.129

82/100

15%

TTI (Time to Interactive)

Value3.7 s

90/100

10%

Network Requests Diagram

usejsdoc.org

120 ms

usejsdoc.css

6 ms

prettify.css

5 ms

css3-github-ribbon.css

8 ms

prettify.js

36 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that all of those requests were addressed to Usejsdoc.org and no external sources were called. The less responsive or slowest element that took the longest time to load (120 ms) belongs to the original domain Usejsdoc.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 10.9 kB (73%)

Content Size

15.0 kB

After Optimization

4.1 kB

  • HTML
  • CSS

In fact, the total size of Usejsdoc.org main page is 15.0 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. Only 5% of websites need less resources to load. HTML takes 11.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 8.9 kB

  • Original 11.9 kB
  • After minification 10.7 kB
  • After compression 2.9 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 8.9 kB or 75% of the original size.

CSS Optimization

-63%

Potential reduce by 1.9 kB

  • Original 3.1 kB
  • After minification 2.6 kB
  • After compression 1.1 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. Usejsdoc.org needs all CSS files to be minified and compressed as it can save up to 1.9 kB or 63% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

  • Images
  • JavaScript
  • CSS

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Usejsdoc. According to our analytics all requests are already optimized.

Network Requests Diagram

usejsdoc.org

usejsdoc.org

120 ms

usejsdoc.css

usejsdoc.css

6 ms

prettify.css

prettify.css

5 ms

css3-github-ribbon.css

css3-github-ribbon.css

8 ms

prettify.js

prettify.js

36 ms

cc-by-sa.svg

cc-by-sa.svg

46 ms

Accessibility Review

usejsdoc.org accessibility score

97

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.

Best Practices

usejsdoc.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

usejsdoc.org SEO score

86

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Usejsdoc.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Usejsdoc.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

usejsdoc.org

Open Graph description is not detected on the main page of Usejsdoc. 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: