Tools & Wizards About Us

Report Summary

  • 94

    Performance

    Renders faster than
    93% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

reactos.org

Front Page | ReactOS Project

Page Load Speed

2.1 sec in total

First Response

314 ms

Resources Loaded

1.6 sec

Page Rendered

152 ms

About Website

Welcome to reactos.org homepage info - get ready to check ReactOS best content for United States right away, or after learning these important things about reactos.org

ReactOS is a free, opensource reimplementation of windows

Visit reactos.org

Key Findings

We analyzed Reactos.org page load time and found that the first response time was 314 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

reactos.org performance score

94

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

93/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

89/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.102

89/100

15%

TTI (Time to Interactive)

Value3.2 s

95/100

10%

Network Requests Diagram

reactos.org

314 ms

reactos.org

404 ms

font-roboto.css

97 ms

fork-awesome.min.css

192 ms

v5-compat.min.css

289 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that all of those requests were addressed to Reactos.org and no external sources were called. The less responsive or slowest element that took the longest time to load (575 ms) belongs to the original domain Reactos.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 55.3 kB (21%)

Content Size

258.7 kB

After Optimization

203.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Reactos.org main page is 258.7 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. 25% of websites need less resources to load. Images take 120.5 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 16.0 kB

  • Original 19.7 kB
  • After minification 17.0 kB
  • After compression 3.7 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. This page needs HTML code to be minified as it can gain 2.8 kB, which is 14% 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 16.0 kB or 81% of the original size.

Image Optimization

-15%

Potential reduce by 18.0 kB

  • Original 120.5 kB
  • After minification 102.5 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, ReactOS needs image optimization as it can save up to 18.0 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-14%

Potential reduce by 9.9 kB

  • Original 68.6 kB
  • After minification 68.6 kB
  • After compression 58.8 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 9.9 kB or 14% of the original size.

CSS Optimization

-23%

Potential reduce by 11.4 kB

  • Original 49.8 kB
  • After minification 49.8 kB
  • After compression 38.3 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. Reactos.org needs all CSS files to be minified and compressed as it can save up to 11.4 kB or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (74%)

Requests Now

19

After Optimization

5

  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ReactOS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

reactos.org accessibility score

91

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

reactos.org 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

reactos.org SEO score

97

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 Reactos.org 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 Reactos.org 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 ReactOS. 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: