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chessui.com screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    74% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

chessui.com

Chess UI - Play chess against Stockfish online

Page Load Speed

661 ms in total

First Response

31 ms

Resources Loaded

546 ms

Page Rendered

84 ms

chessui.com screenshot

About Website

Visit chessui.com now to see the best up-to-date Chess UI content for United States and also check out these interesting facts you probably never knew about chessui.com

This site is an online chess GUI. Play chess against the stockfish chess engine. Cloud engines Leela Chess and Fruit are also available. It is the classic match up of man vs computer.

Visit chessui.com

Key Findings

We analyzed Chessui.com page load time and found that the first response time was 31 ms and then it took 630 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

chessui.com performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

62/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

19/100

25%

SI (Speed Index)

Value3.5 s

88/100

10%

TBT (Total Blocking Time)

Value610 ms

49/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value5.0 s

77/100

10%

Network Requests Diagram

chessui.com

31 ms

chessboard-0.3.0.min.css

11 ms

animate.min.css

52 ms

sqm0gdv.css

232 ms

css

59 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that 24% of them (5 requests) were addressed to the original Chessui.com, 24% (5 requests) were made to Cdnjs.cloudflare.com and 24% (5 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (232 ms) relates to the external source Use.typekit.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 19.9 kB (71%)

Content Size

27.9 kB

After Optimization

8.0 kB

  • HTML
  • CSS

In fact, the total size of Chessui.com main page is 27.9 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. 25% of websites need less resources to load. HTML takes 27.9 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 19.9 kB

  • Original 27.9 kB
  • After minification 27.9 kB
  • After compression 8.0 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 19.9 kB or 71% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 5 B

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.

Requests Breakdown

Number of requests can be reduced by 12 (80%)

Requests Now

15

After Optimization

3

  • Images
  • JavaScript
  • CSS

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chess UI. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

chessui.com

chessui.com

31 ms

chessboard-0.3.0.min.css

chessboard-0.3.0.min.css

11 ms

animate.min.css

animate.min.css

52 ms

sqm0gdv.css

sqm0gdv.css

232 ms

css

css

59 ms

noty.min.css

noty.min.css

58 ms

font-awesome.min.css

font-awesome.min.css

64 ms

jquery.min.js

jquery.min.js

59 ms

jquery.ui.touch-punch.min.js

jquery.ui.touch-punch.min.js

57 ms

chess.min.js

chess.min.js

195 ms

vendor.js

vendor.js

131 ms

Chart.min.js

Chart.min.js

61 ms

js

js

88 ms

app_bundle.js

app_bundle.js

49 ms

Leela_Chess_Zero_logo.svg

Leela_Chess_Zero_logo.svg

135 ms

p.css

p.css

25 ms

d

d

96 ms

d

d

99 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

98 ms

d

d

122 ms

d

d

125 ms

Accessibility Review

chessui.com accessibility score

81

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Form elements do not have associated labels

Best Practices

chessui.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

chessui.com SEO score

90

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

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 Chessui.com 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 Chessui.com 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

chessui.com

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