Tools & Wizards About Us
dos.zone screenshot

Report Summary

  • 77

    Performance

    Renders faster than
    85% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

dos.zone

DOS Zone | DOS games in browser

Page Load Speed

6 sec in total

First Response

521 ms

Resources Loaded

4.5 sec

Page Rendered

1 sec

dos.zone screenshot

About Website

Welcome to dos.zone homepage info - get ready to check DOS best content right away, or after learning these important things about dos.zone

Ultimate collection of free dos games to play online in browser. No registration needed, no advertisment, just play!

Visit dos.zone

Key Findings

We analyzed Dos.zone page load time and found that the first response time was 521 ms and then it took 5.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

dos.zone performance score

77

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

62/100

25%

SI (Speed Index)

Value4.4 s

74/100

10%

TBT (Total Blocking Time)

Value140 ms

95/100

30%

CLS (Cumulative Layout Shift)

Value0.038

100/100

15%

TTI (Time to Interactive)

Value6.4 s

59/100

10%

Network Requests Diagram

dos.zone

521 ms

dos.zone

814 ms

js-dos.css

872 ms

tailwind.css

623 ms

dynamics.js

181 ms

Our browser made a total of 93 requests to load all elements on the main page. We found that 95% of them (88 requests) were addressed to the original Dos.zone, 3% (3 requests) were made to Mc.yandex.com and 1% (1 request) were made to V8.js-dos.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Dos.zone.

Page Optimization Overview & Recommendations

Page size can be reduced by 405.8 kB (58%)

Content Size

701.9 kB

After Optimization

296.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dos.zone main page is 701.9 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. 30% of websites need less resources to load. Images take 268.7 kB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 126.8 kB

  • Original 138.0 kB
  • After minification 111.4 kB
  • After compression 11.2 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. This page needs HTML code to be minified as it can gain 26.6 kB, which is 19% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 126.8 kB or 92% of the original size.

Image Optimization

-40%

Potential reduce by 107.0 kB

  • Original 268.7 kB
  • After minification 161.6 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. Obviously, DOS needs image optimization as it can save up to 107.0 kB or 40% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-27%

Potential reduce by 37.8 kB

  • Original 141.3 kB
  • After minification 141.3 kB
  • After compression 103.5 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 37.8 kB or 27% of the original size.

CSS Optimization

-87%

Potential reduce by 134.1 kB

  • Original 154.0 kB
  • After minification 26.1 kB
  • After compression 19.9 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. Dos.zone needs all CSS files to be minified and compressed as it can save up to 134.1 kB or 87% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

91

After Optimization

91

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 91 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DOS. According to our analytics all requests are already optimized.

Network Requests Diagram

dos.zone

dos.zone

521 ms

dos.zone

dos.zone

814 ms

js-dos.css

js-dos.css

872 ms

tailwind.css

tailwind.css

623 ms

dynamics.js

dynamics.js

181 ms

tag.js

tag.js

1014 ms

twitter.svg

twitter.svg

136 ms

telegram.svg

telegram.svg

131 ms

discord.svg

discord.svg

253 ms

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Accessibility Review

dos.zone accessibility score

77

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

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

dos.zone 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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

dos.zone 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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dos.zone can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Dos.zone 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

dos.zone

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