Tools & Wizards About Us
sudoku.name screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

sudoku.name

Sudoku - Play, Print & Share Free Sudoku Online puzzles

Page Load Speed

1.9 sec in total

First Response

50 ms

Resources Loaded

1.6 sec

Page Rendered

217 ms

sudoku.name screenshot

About Website

Visit sudoku.name now to see the best up-to-date Sudoku content for Ukraine and also check out these interesting facts you probably never knew about sudoku.name

Play Sudoku online for free. 4 difficulty levels. Unlimited puzzles to choose from. Print, share, get statistics and meet other players. Play Sudoku Now!

Visit sudoku.name

Key Findings

We analyzed Sudoku.name page load time and found that the first response time was 50 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

sudoku.name performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

89/100

25%

SI (Speed Index)

Value7.3 s

29/100

10%

TBT (Total Blocking Time)

Value4,060 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.025

100/100

15%

TTI (Time to Interactive)

Value16.4 s

5/100

10%

Network Requests Diagram

sudoku.name

50 ms

www.sudoku.name

350 ms

sdk.js

47 ms

gpt.js

139 ms

adsbygoogle.js

167 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 45% of them (17 requests) were addressed to the original Sudoku.name, 11% (4 requests) were made to Pagead2.googlesyndication.com and 8% (3 requests) were made to Securepubads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (616 ms) relates to the external source Googleads.g.doubleclick.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 572.3 kB (61%)

Content Size

932.8 kB

After Optimization

360.5 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Sudoku.name main page is 932.8 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. 65% of websites need less resources to load. Javascripts take 695.9 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 182.6 kB

  • Original 217.9 kB
  • After minification 213.4 kB
  • After compression 35.3 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 182.6 kB or 84% of the original size.

Image Optimization

-5%

Potential reduce by 1.0 kB

  • Original 19.1 kB
  • After minification 18.0 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. Sudoku images are well optimized though.

JavaScript Optimization

-56%

Potential reduce by 388.7 kB

  • Original 695.9 kB
  • After minification 695.9 kB
  • After compression 307.2 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 388.7 kB or 56% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (28%)

Requests Now

36

After Optimization

26

  • AJAX
  • Images
  • JavaScript

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sudoku. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sudoku.name

sudoku.name

50 ms

www.sudoku.name

www.sudoku.name

350 ms

sdk.js

sdk.js

47 ms

gpt.js

gpt.js

139 ms

adsbygoogle.js

adsbygoogle.js

167 ms

js

js

86 ms

head2.png

head2.png

53 ms

transparent2.gif

transparent2.gif

71 ms

css_sprites5.gif

css_sprites5.gif

70 ms

sdk.js

sdk.js

11 ms

pubads_impl.js

pubads_impl.js

75 ms

show_ads_impl.js

show_ads_impl.js

324 ms

sync.min.js

sync.min.js

18 ms

ads

ads

510 ms

container.html

container.html

24 ms

map

map

68 ms

ajax_user_upload_sudoku.php

ajax_user_upload_sudoku.php

179 ms

sodar

sodar

73 ms

zrt_lookup.html

zrt_lookup.html

42 ms

ads

ads

616 ms

back_cpad.png

back_cpad.png

19 ms

mouse-board.png

mouse-board.png

19 ms

mouse-board-delete.png

mouse-board-delete.png

36 ms

mouse-board-close.png

mouse-board-close.png

37 ms

like.php

like.php

93 ms

sodar2.js

sodar2.js

24 ms

runner.html

runner.html

10 ms

aframe

aframe

54 ms

feg8rL66UTsTrrlS9w_iUH8JqR_kCfLFdi2W6wljJCU.js

feg8rL66UTsTrrlS9w_iUH8JqR_kCfLFdi2W6wljJCU.js

10 ms

w9py8-RGams.js

w9py8-RGams.js

41 ms

FEppCFCt76d.png

FEppCFCt76d.png

44 ms

4040.jpeg

4040.jpeg

28 ms

21722.png

21722.png

29 ms

18069.jpeg

18069.jpeg

28 ms

7010.png

7010.png

27 ms

more.png

more.png

28 ms

4040.jpeg

4040.jpeg

42 ms

flag.png

flag.png

42 ms

Accessibility Review

sudoku.name accessibility score

68

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.

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

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

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

sudoku.name best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Page has valid source maps

SEO Factors

sudoku.name SEO score

83

Search Engine Optimization Advices

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sudoku.name can be misinterpreted by Google and other search engines. Our service has detected that English 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 Sudoku.name 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

sudoku.name

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