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lichess.org screenshot

Report Summary

  • 83

    Performance

    Renders faster than
    87% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

lichess.org

lichess.org • Free Online Chess

Page Load Speed

1.5 sec in total

First Response

157 ms

Resources Loaded

683 ms

Page Rendered

633 ms

lichess.org screenshot

About Website

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

Free online chess server. Play chess in a clean interface. No registration, no ads, no plugin required. Play chess with the computer, friends or random opponents.

Visit lichess.org

Key Findings

We analyzed Lichess.org page load time and found that the first response time was 157 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

lichess.org performance score

83

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

58/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

61/100

25%

SI (Speed Index)

Value3.2 s

91/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.005

100/100

15%

TTI (Time to Interactive)

Value3.8 s

90/100

10%

Network Requests Diagram

lichess.org

157 ms

lichess.org

355 ms

theme-all.52705d41.css

37 ms

site.115e8860.css

50 ms

lobby.3ddbb96a.css

59 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 6% of them (2 requests) were addressed to the original Lichess.org, 84% (26 requests) were made to Lichess1.org and 10% (3 requests) were made to Image.lichess1.org. The less responsive or slowest element that took the longest time to load (355 ms) belongs to the original domain Lichess.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 34.4 kB (25%)

Content Size

135.6 kB

After Optimization

101.2 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Lichess.org main page is 135.6 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. 20% of websites need less resources to load. Images take 88.4 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 32.1 kB

  • Original 42.2 kB
  • After minification 42.1 kB
  • After compression 10.1 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 32.1 kB or 76% of the original size.

Image Optimization

-3%

Potential reduce by 2.3 kB

  • Original 88.4 kB
  • After minification 86.2 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. Li Chess images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 23 B

  • Original 4.9 kB
  • After minification 4.9 kB
  • After compression 4.9 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.

Requests Breakdown

Number of requests can be reduced by 3 (11%)

Requests Now

28

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Li Chess. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lichess.org

lichess.org

157 ms

lichess.org

lichess.org

355 ms

theme-all.52705d41.css

theme-all.52705d41.css

37 ms

site.115e8860.css

site.115e8860.css

50 ms

lobby.3ddbb96a.css

lobby.3ddbb96a.css

59 ms

cburnett.css

cburnett.css

56 ms

cash.min.js

cash.min.js

54 ms

display

display

42 ms

display

display

53 ms

display

display

94 ms

activity.martial-arts-uniform.webp

activity.martial-arts-uniform.webp

50 ms

nature.shark.webp

nature.shark.webp

51 ms

nature.penguin.webp

nature.penguin.webp

92 ms

activity.sparkles.webp

activity.sparkles.webp

94 ms

smileys.partying-face.webp

smileys.partying-face.webp

95 ms

symbols.passport-control.webp

symbols.passport-control.webp

93 ms

smileys.smiling-face-with-smiling-eyes.webp

smileys.smiling-face-with-smiling-eyes.webp

94 ms

activity.lichess-rapid.webp

activity.lichess-rapid.webp

95 ms

nature.goat.webp

nature.goat.webp

94 ms

symbols.yellow-heart.webp

symbols.yellow-heart.webp

95 ms

food-drink.beer-mug.webp

food-drink.beer-mug.webp

96 ms

nature.dog-face.webp

nature.dog-face.webp

97 ms

activity.party-popper.webp

activity.party-popper.webp

96 ms

objects.running-shoe.webp

objects.running-shoe.webp

98 ms

travel-places.globe-with-meridians.webp

travel-places.globe-with-meridians.webp

97 ms

activity.chess.webp

activity.chess.webp

98 ms

activity.artist-palette.webp

activity.artist-palette.webp

99 ms

activity.trophy.webp

activity.trophy.webp

98 ms

symbols.white-star.webp

symbols.white-star.webp

99 ms

brown.svg

brown.svg

12 ms

lichess.woff

lichess.woff

18 ms

Accessibility Review

lichess.org accessibility score

90

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

lichess.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

SEO Factors

lichess.org SEO score

84

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

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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

High

Tap targets are not sized appropriately

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 Lichess.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 Lichess.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

lichess.org

Open Graph data is detected on the main page of Li Chess. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: