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Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

sudoku-play.com

Play Sudoku Free Online | 1 Million Free Sudoku Puzzles

Page Load Speed

1.3 sec in total

First Response

355 ms

Resources Loaded

857 ms

Page Rendered

133 ms

About Website

Welcome to sudoku-play.com homepage info - get ready to check Sudoku Play best content right away, or after learning these important things about sudoku-play.com

Sudoku-Play.com is the home for Free Sudoku Games Online and Online Sudoku Puzzle Solutions

Visit sudoku-play.com

Key Findings

We analyzed Sudoku-play.com page load time and found that the first response time was 355 ms and then it took 990 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

sudoku-play.com performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

55/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value1,770 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value10.1 s

26/100

10%

Network Requests Diagram

sudoku-play.com

355 ms

sudoku.js

80 ms

sudoku.css

146 ms

show_ads.js

5 ms

addthis_widget.js

13 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 24% of them (7 requests) were addressed to the original Sudoku-play.com, 17% (5 requests) were made to Googleads.g.doubleclick.net and 14% (4 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (355 ms) belongs to the original domain Sudoku-play.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 763.3 kB (54%)

Content Size

1.4 MB

After Optimization

646.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sudoku-play.com main page is 1.4 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. 40% of websites need less resources to load. Javascripts take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 37.2 kB

  • Original 45.9 kB
  • After minification 45.6 kB
  • After compression 8.7 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 37.2 kB or 81% of the original size.

Image Optimization

-7%

Potential reduce by 14.9 kB

  • Original 226.9 kB
  • After minification 211.9 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 Play images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 709.4 kB

  • Original 1.1 MB
  • After minification 1.1 MB
  • After compression 425.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 709.4 kB or 62% of the original size.

CSS Optimization

-75%

Potential reduce by 1.8 kB

  • Original 2.4 kB
  • After minification 1.9 kB
  • After compression 605 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. Sudoku-play.com needs all CSS files to be minified and compressed as it can save up to 1.8 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (37%)

Requests Now

27

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sudoku Play. 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

Accessibility Review

sudoku-play.com accessibility score

80

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

High

Form elements do not have associated labels

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

sudoku-play.com best practices score

67

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

Browser errors were logged to the console

SEO Factors

sudoku-play.com SEO score

99

Search Engine Optimization Advices

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-play.com 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-play.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

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