5 sec in total
Click here to check amazing Sudoku content for United States. Otherwise, check out these important facts you probably never knew about sudoku.ws
The Sudoku website contains online (interactive) and printable sudoku puzzles, ordered by difficulty level.Visit sudoku.ws
We analyzed Sudoku.ws page load time and found that the first response time was 249 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 65% of websites can load faster.
sudoku.ws performance score
Our browser made a total of 66 requests to load all elements on the main page. We found that 36% of them (24 requests) were addressed to the original Sudoku.ws, 15% (10 requests) were made to Tpc.googlesyndication.com and 11% (7 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Googletagservices.com.
Page size can be reduced by 222.0 kB (46%)
Potential reduce by 19.9 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 79% of the original size.
Potential reduce by 1.6 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.
Potential reduce by 200.4 kB
Potential reduce by 185 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.ws has all CSS files already compressed.
Number of requests can be reduced by 37 (67%)
sudoku.ws accessibility score
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.
[aria-*] attributes do not match their roles
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Names and labels
<frame> or <iframe> elements do not have a title
sudoku.ws best practices score
Trust and Safety
Does not use HTTPS
Ensure CSP is effective against XSS attacks
Browser errors were logged to the console
Page has valid source maps
sudoku.ws SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Document uses legible font sizes
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sudoku.ws can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Sudoku.ws 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.
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: