Tools & Wizards About Us
chess-com.ru screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

chess-com.ru

Шахматы онлайн ♟️ играть с компьютером!

Page Load Speed

5.4 sec in total

First Response

549 ms

Resources Loaded

4.8 sec

Page Rendered

100 ms

chess-com.ru screenshot

About Website

Welcome to chess-com.ru homepage info - get ready to check Chess Com best content for Russia right away, or after learning these important things about chess-com.ru

Онлайн Шахматы Chess ⏱️ - играть бесплатно на сайте chess-com.ru с копьютером или с человеком. Три уровня сложности Шахмат дают возможность играть новичкам и подготовленным игрокам. Играй в шахматы on...

Visit chess-com.ru

Key Findings

We analyzed Chess-com.ru page load time and found that the first response time was 549 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

chess-com.ru performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

26/100

10%

LCP (Largest Contentful Paint)

Value14.8 s

0/100

25%

SI (Speed Index)

Value12.6 s

3/100

10%

TBT (Total Blocking Time)

Value2,130 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.052

99/100

15%

TTI (Time to Interactive)

Value14.4 s

9/100

10%

Network Requests Diagram

chess-com.ru

549 ms

chess-com.ru

592 ms

reset.css

140 ms

main.css

280 ms

ios_fullscreen.css

418 ms

Our browser made a total of 104 requests to load all elements on the main page. We found that 88% of them (92 requests) were addressed to the original Chess-com.ru, 3% (3 requests) were made to Mc.yandex.com and 2% (2 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Chess-com.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 488.7 kB (11%)

Content Size

4.3 MB

After Optimization

3.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chess-com.ru main page is 4.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 55% of websites need less resources to load. Images take 4.0 MB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 12.6 kB

  • Original 17.8 kB
  • After minification 17.1 kB
  • After compression 5.3 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 12.6 kB or 70% of the original size.

Image Optimization

-11%

Potential reduce by 456.9 kB

  • Original 4.0 MB
  • After minification 3.5 MB

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. Obviously, Chess Com needs image optimization as it can save up to 456.9 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-7%

Potential reduce by 18.8 kB

  • Original 257.5 kB
  • After minification 256.7 kB
  • After compression 238.7 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

-18%

Potential reduce by 346 B

  • Original 1.9 kB
  • After minification 1.9 kB
  • After compression 1.6 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. Chess-com.ru needs all CSS files to be minified and compressed as it can save up to 346 B or 18% of the original size.

Requests Breakdown

Number of requests can be reduced by 46 (46%)

Requests Now

100

After Optimization

54

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 100 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chess Com. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 44 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

chess-com.ru

chess-com.ru

549 ms

chess-com.ru

chess-com.ru

592 ms

reset.css

reset.css

140 ms

main.css

main.css

280 ms

ios_fullscreen.css

ios_fullscreen.css

418 ms

orientation_utils.css

orientation_utils.css

435 ms

jquery-3.2.1.min.js

jquery-3.2.1.min.js

575 ms

createjs.min.js

createjs.min.js

725 ms

howler.min.js

howler.min.js

431 ms

screenfull.js

screenfull.js

432 ms

platform.js

platform.js

557 ms

ios_fullscreen.js

ios_fullscreen.js

573 ms

CAreYouSurePanel.js

CAreYouSurePanel.js

582 ms

TreeModel.js

TreeModel.js

583 ms

CTreeDecision.js

CTreeDecision.js

695 ms

ctl_utils.js

ctl_utils.js

714 ms

sprite_lib.js

sprite_lib.js

714 ms

settings.js

settings.js

715 ms

CLang.js

CLang.js

715 ms

CPreloader.js

CPreloader.js

833 ms

CCreditsPanel.js

CCreditsPanel.js

854 ms

CMain.js

CMain.js

856 ms

CTextButton.js

CTextButton.js

857 ms

CToggle.js

CToggle.js

856 ms

CGfxButton.js

CGfxButton.js

862 ms

CMessage.js

CMessage.js

971 ms

CMenu.js

CMenu.js

995 ms

CModeMenu.js

CModeMenu.js

997 ms

CGame.js

CGame.js

997 ms

CInterface.js

CInterface.js

998 ms

CInfoTurn.js

CInfoTurn.js

1002 ms

CThinking.js

CThinking.js

1109 ms

CEndPanel.js

CEndPanel.js

1136 ms

CCell.js

CCell.js

1137 ms

CPiece.js

CPiece.js

1138 ms

CMovesController.js

CMovesController.js

1140 ms

CBoardStateController.js

CBoardStateController.js

1143 ms

context.js

context.js

971 ms

js

js

79 ms

usocial.js

usocial.js

295 ms

adsbygoogle.js

adsbygoogle.js

41 ms

CCopiedCell.js

CCopiedCell.js

1245 ms

CPromoPanel.js

CPromoPanel.js

1145 ms

CAI.js

CAI.js

1010 ms

CMovesControllerFaster.js

CMovesControllerFaster.js

872 ms

CGUIExpandible.js

CGUIExpandible.js

859 ms

CCTLText.js

CCTLText.js

858 ms

sprintf.js

sprintf.js

959 ms

bg_tile.jpg

bg_tile.jpg

162 ms

chess.png

chess.png

567 ms

tag.js

tag.js

906 ms

arial_rounded_mt_bold_bold-webfont.woff

arial_rounded_mt_bold_bold-webfont.woff

148 ms

show_ads_impl.js

show_ads_impl.js

46 ms

context.js

context.js

1048 ms

progress_bar.png

progress_bar.png

144 ms

200x200.jpg

200x200.jpg

424 ms

but_start.png

but_start.png

143 ms

zrt_lookup.html

zrt_lookup.html

28 ms

ads

ads

36 ms

but_play.png

but_play.png

472 ms

msg_box.png

msg_box.png

847 ms

bg_menu.jpg

bg_menu.jpg

711 ms

bg_mod_menu.jpg

bg_mod_menu.jpg

570 ms

bg_game.jpg

bg_game.jpg

712 ms

but_credits.png

but_credits.png

190 ms

but_fullscreen.png

but_fullscreen.png

332 ms

logo_ctl.png

logo_ctl.png

480 ms

vs_man_panel.png

vs_man_panel.png

831 ms

vs_pc_panel.png

vs_pc_panel.png

623 ms

message.png

message.png

711 ms

but_home.png

but_home.png

765 ms

but_show.png

but_show.png

853 ms

but_exit.png

but_exit.png

852 ms

audio_icon.png

audio_icon.png

853 ms

but_settings.png

but_settings.png

906 ms

grid_8.png

grid_8.png

1526 ms

threat.png

threat.png

987 ms

highlight.png

highlight.png

991 ms

player_panel.png

player_panel.png

994 ms

audio_icon_big.png

audio_icon_big.png

995 ms

black_bishop.png

black_bishop.png

1048 ms

black_king.png

black_king.png

1128 ms

black_knight.png

black_knight.png

1135 ms

black_pawn.png

black_pawn.png

1135 ms

black_queen.png

black_queen.png

1137 ms

black_rook.png

black_rook.png

1189 ms

white_bishop.png

white_bishop.png

1268 ms

white_king.png

white_king.png

1272 ms

white_knight.png

white_knight.png

1276 ms

white_pawn.png

white_pawn.png

1279 ms

white_queen.png

white_queen.png

1334 ms

white_rook.png

white_rook.png

1409 ms

white_king_marker.png

white_king_marker.png

1411 ms

black_king_marker.png

black_king_marker.png

1417 ms

score_panel.png

score_panel.png

1376 ms

toggle_easy.png

toggle_easy.png

1284 ms

toggle_medium.png

toggle_medium.png

1221 ms

toggle_hard.png

toggle_hard.png

1075 ms

but_yes.png

but_yes.png

1086 ms

advert.gif

advert.gif

742 ms

but_no.png

but_no.png

1138 ms

but_restart.png

but_restart.png

992 ms

sync_cookie_image_decide

sync_cookie_image_decide

184 ms

1

1

151 ms

Accessibility Review

chess-com.ru accessibility score

73

Accessibility Issues

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

chess-com.ru best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

chess-com.ru SEO score

92

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

    RU

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chess-com.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 Chess-com.ru 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

chess-com.ru

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