Tools & Wizards About Us
chess-com.ru screenshot

Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% 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

Chess online - играть в Шахматы онлайн бесплатно с компьютером

Page Load Speed

5.4 sec in total

First Response

549 ms

Resources Loaded

4.8 sec

Page Rendered

79 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 onlin...

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 4.8 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

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

60/100

25%

SI (Speed Index)

Value16.1 s

0/100

10%

TBT (Total Blocking Time)

Value4,550 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.052

99/100

15%

TTI (Time to Interactive)

Value23.8 s

1/100

10%

Network Requests Diagram

chess-com.ru

549 ms

chess-com.ru

585 ms

reset.css

139 ms

main.css

278 ms

ios_fullscreen.css

411 ms

Our browser made a total of 125 requests to load all elements on the main page. We found that 74% of them (92 requests) were addressed to the original Chess-com.ru, 6% (7 requests) were made to Tpc.googlesyndication.com and 4% (5 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Chess-com.ru.

Page Optimization Overview & Recommendations

Page size can be reduced by 660.1 kB (13%)

Content Size

4.9 MB

After Optimization

4.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chess-com.ru main page is 4.9 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. 65% of websites need less resources to load. Images take 4.0 MB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 15.1 kB

  • Original 20.9 kB
  • After minification 20.1 kB
  • After compression 5.8 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 15.1 kB or 72% of the original size.

Image Optimization

-12%

Potential reduce by 458.6 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 458.6 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-20%

Potential reduce by 181.8 kB

  • Original 887.7 kB
  • After minification 866.3 kB
  • After compression 705.9 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 181.8 kB or 20% of the original size.

CSS Optimization

-19%

Potential reduce by 4.7 kB

  • Original 24.5 kB
  • After minification 24.0 kB
  • After compression 19.8 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 4.7 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 65 (54%)

Requests Now

120

After Optimization

55

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 120 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 56 to 1 for JavaScripts and from 6 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

585 ms

reset.css

reset.css

139 ms

main.css

main.css

278 ms

ios_fullscreen.css

ios_fullscreen.css

411 ms

orientation_utils.css

orientation_utils.css

415 ms

jquery-3.2.1.min.js

jquery-3.2.1.min.js

563 ms

createjs.min.js

createjs.min.js

713 ms

howler.min.js

howler.min.js

422 ms

screenfull.js

screenfull.js

420 ms

platform.js

platform.js

550 ms

ios_fullscreen.js

ios_fullscreen.js

552 ms

CAreYouSurePanel.js

CAreYouSurePanel.js

560 ms

TreeModel.js

TreeModel.js

577 ms

CTreeDecision.js

CTreeDecision.js

687 ms

ctl_utils.js

ctl_utils.js

691 ms

sprite_lib.js

sprite_lib.js

699 ms

settings.js

settings.js

701 ms

CLang.js

CLang.js

702 ms

CPreloader.js

CPreloader.js

854 ms

CCreditsPanel.js

CCreditsPanel.js

830 ms

CMain.js

CMain.js

839 ms

CTextButton.js

CTextButton.js

840 ms

CToggle.js

CToggle.js

841 ms

CGfxButton.js

CGfxButton.js

851 ms

CMessage.js

CMessage.js

967 ms

CMenu.js

CMenu.js

979 ms

CModeMenu.js

CModeMenu.js

978 ms

CGame.js

CGame.js

981 ms

CInterface.js

CInterface.js

990 ms

CInfoTurn.js

CInfoTurn.js

1098 ms

CThinking.js

CThinking.js

1105 ms

CEndPanel.js

CEndPanel.js

1118 ms

CCell.js

CCell.js

1118 ms

CPiece.js

CPiece.js

1120 ms

CMovesController.js

CMovesController.js

1130 ms

CBoardStateController.js

CBoardStateController.js

1234 ms

context.js

context.js

1058 ms

js

js

240 ms

usocial.js

usocial.js

400 ms

adsbygoogle.js

adsbygoogle.js

148 ms

CCopiedCell.js

CCopiedCell.js

1241 ms

CPromoPanel.js

CPromoPanel.js

1123 ms

CAI.js

CAI.js

987 ms

CMovesControllerFaster.js

CMovesControllerFaster.js

857 ms

CGUIExpandible.js

CGUIExpandible.js

860 ms

CCTLText.js

CCTLText.js

956 ms

sprintf.js

sprintf.js

964 ms

bg_tile.jpg

bg_tile.jpg

144 ms

chess.png

chess.png

552 ms

tag.js

tag.js

848 ms

arial_rounded_mt_bold_bold-webfont.woff

arial_rounded_mt_bold_bold-webfont.woff

143 ms

show_ads_impl.js

show_ads_impl.js

370 ms

zrt_lookup_nohtml.html

zrt_lookup_nohtml.html

50 ms

context.js

context.js

1046 ms

usocial.share.js

usocial.share.js

36 ms

progress_bar.png

progress_bar.png

141 ms

200x200.jpg

200x200.jpg

565 ms

but_start.png

but_start.png

140 ms

uscl.nomobile.css

uscl.nomobile.css

40 ms

ads

ads

443 ms

but_play.png

but_play.png

415 ms

msg_box.png

msg_box.png

415 ms

bg_menu.jpg

bg_menu.jpg

839 ms

bg_mod_menu.jpg

bg_mod_menu.jpg

847 ms

bg_game.jpg

bg_game.jpg

286 ms

but_credits.png

but_credits.png

140 ms

but_fullscreen.png

but_fullscreen.png

280 ms

logo_ctl.png

logo_ctl.png

754 ms

vs_man_panel.png

vs_man_panel.png

440 ms

vs_pc_panel.png

vs_pc_panel.png

829 ms

message.png

message.png

622 ms

but_home.png

but_home.png

622 ms

but_show.png

but_show.png

753 ms

but_exit.png

but_exit.png

754 ms

audio_icon.png

audio_icon.png

825 ms

but_settings.png

but_settings.png

836 ms

grid_8.png

grid_8.png

994 ms

threat.png

threat.png

961 ms

highlight.png

highlight.png

965 ms

player_panel.png

player_panel.png

976 ms

audio_icon_big.png

audio_icon_big.png

977 ms

black_bishop.png

black_bishop.png

985 ms

black_king.png

black_king.png

1098 ms

black_knight.png

black_knight.png

1103 ms

black_pawn.png

black_pawn.png

1122 ms

black_queen.png

black_queen.png

1115 ms

black_rook.png

black_rook.png

1124 ms

white_bishop.png

white_bishop.png

1132 ms

white_king.png

white_king.png

1234 ms

white_knight.png

white_knight.png

1241 ms

white_pawn.png

white_pawn.png

1256 ms

white_queen.png

white_queen.png

1260 ms

white_rook.png

white_rook.png

1263 ms

white_king_marker.png

white_king_marker.png

1271 ms

black_king_marker.png

black_king_marker.png

1370 ms

score_panel.png

score_panel.png

1379 ms

toggle_easy.png

toggle_easy.png

1259 ms

advert.gif

advert.gif

644 ms

reactive_library.js

reactive_library.js

196 ms

toggle_medium.png

toggle_medium.png

1124 ms

toggle_hard.png

toggle_hard.png

1121 ms

but_yes.png

but_yes.png

1011 ms

but_no.png

but_no.png

1097 ms

but_restart.png

but_restart.png

1082 ms

zrt_lookup_nohtml.html

zrt_lookup_nohtml.html

31 ms

9299483323053094230

9299483323053094230

35 ms

load_preloaded_resource.js

load_preloaded_resource.js

39 ms

abg_lite.js

abg_lite.js

32 ms

s

s

20 ms

window_focus.js

window_focus.js

139 ms

qs_click_protection.js

qs_click_protection.js

43 ms

ufs_web_display.js

ufs_web_display.js

21 ms

e8fe9505a536d6b357c55aad9c4ec32b.js

e8fe9505a536d6b357c55aad9c4ec32b.js

149 ms

fullscreen_api_adapter.js

fullscreen_api_adapter.js

33 ms

interstitial_ad_frame.js

interstitial_ad_frame.js

140 ms

feedback_grey600_24dp.png

feedback_grey600_24dp.png

142 ms

settings_grey600_24dp.png

settings_grey600_24dp.png

143 ms

icon.png

icon.png

20 ms

css

css

40 ms

1zgHIv7PRgG-iYsx4Mp4gQSytzfgI2cd0hh8WxdX2bs.js

1zgHIv7PRgG-iYsx4Mp4gQSytzfgI2cd0hh8WxdX2bs.js

17 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyw.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyw.ttf

89 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyw.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyw.ttf

90 ms

sync_cookie_image_decide

sync_cookie_image_decide

128 ms

1

1

127 ms

Accessibility Review

chess-com.ru accessibility score

79

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

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: