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reactos.org screenshot

Report Summary

  • 92

    Performance

    Renders faster than
    92% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 97

    SEO

    Google-friendlier than
    92% of websites

reactos.org

Front Page | ReactOS Project

Page Load Speed

4 sec in total

First Response

386 ms

Resources Loaded

3.4 sec

Page Rendered

268 ms

reactos.org screenshot

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 386 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

reactos.org performance score

92

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

87/100

25%

SI (Speed Index)

Value2.5 s

97/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.102

89/100

15%

TTI (Time to Interactive)

Value4.3 s

85/100

10%

Network Requests Diagram

reactos.org

386 ms

bootstrap.css

179 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

190 ms

css_vZ_wrMQ9Og-YPPxa1q4us3N7DsZMJa-14jShHgRoRNo.css

193 ms

css_SB0wyMRcEffDeDL5tupJNsdAeo5Yo49CrYus5IBV-oQ.css

192 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 77% of them (34 requests) were addressed to the original Reactos.org, 14% (6 requests) were made to Fonts.gstatic.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Reactos.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (57%)

Content Size

2.7 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Reactos.org main page is 2.7 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. 55% of websites need less resources to load. Images take 960.1 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 151.4 kB

  • Original 175.1 kB
  • After minification 169.4 kB
  • After compression 23.7 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 151.4 kB or 86% of the original size.

Image Optimization

-14%

Potential reduce by 135.3 kB

  • Original 960.1 kB
  • After minification 824.8 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 135.3 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-77%

Potential reduce by 557.4 kB

  • Original 725.8 kB
  • After minification 544.5 kB
  • After compression 168.4 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 557.4 kB or 77% of the original size.

CSS Optimization

-84%

Potential reduce by 696.0 kB

  • Original 830.8 kB
  • After minification 819.1 kB
  • After compression 134.8 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 696.0 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (33%)

Requests Now

36

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 36 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 6 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

reactos.org

reactos.org

386 ms

bootstrap.css

bootstrap.css

179 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

190 ms

css_vZ_wrMQ9Og-YPPxa1q4us3N7DsZMJa-14jShHgRoRNo.css

css_vZ_wrMQ9Og-YPPxa1q4us3N7DsZMJa-14jShHgRoRNo.css

193 ms

css_SB0wyMRcEffDeDL5tupJNsdAeo5Yo49CrYus5IBV-oQ.css

css_SB0wyMRcEffDeDL5tupJNsdAeo5Yo49CrYus5IBV-oQ.css

192 ms

css_VGWiSlioIPhyTXeBi8e1EtRdAIyn0LPHMCTjO9EQszI.css

css_VGWiSlioIPhyTXeBi8e1EtRdAIyn0LPHMCTjO9EQszI.css

278 ms

css_yLLmRpoYuHdhmRrtmmVnQ5DTyBQSEarccnxasq706X4.css

css_yLLmRpoYuHdhmRrtmmVnQ5DTyBQSEarccnxasq706X4.css

192 ms

css_rdFWT2yzYTfdS8Lco8fWkCop6a-1Ph9bnrSdJIVyWLQ.css

css_rdFWT2yzYTfdS8Lco8fWkCop6a-1Ph9bnrSdJIVyWLQ.css

361 ms

js_jpJjaUC0z8JMIyav5oQrYykDRUb64rpaUDpB4Y9aklU.js

js_jpJjaUC0z8JMIyav5oQrYykDRUb64rpaUDpB4Y9aklU.js

458 ms

js_obFUyTbqtcoGQtszVI46l1_oD927PzlDtlr_ilpYBqE.js

js_obFUyTbqtcoGQtszVI46l1_oD927PzlDtlr_ilpYBqE.js

294 ms

js_TtXiwFAqe0BoKRJKTxjHH0dgXVKX8Prk3LWndnvTXo0.js

js_TtXiwFAqe0BoKRJKTxjHH0dgXVKX8Prk3LWndnvTXo0.js

295 ms

js_JGLZkXqcx5aSgVV9n_EzzZsdY99FxBkdPKMlCTLCyAc.js

js_JGLZkXqcx5aSgVV9n_EzzZsdY99FxBkdPKMlCTLCyAc.js

375 ms

js_X3tWw7H0mz2r5piYbo4egRkEWmcxizMIWW1JRvKnxRI.js

js_X3tWw7H0mz2r5piYbo4egRkEWmcxizMIWW1JRvKnxRI.js

1009 ms

css

css

26 ms

analytics.js

analytics.js

20 ms

collect

collect

25 ms

ReactOS_0.png

ReactOS_0.png

203 ms

smile.gif

smile.gif

517 ms

social-sprites.png

social-sprites.png

97 ms

home-concept.png

home-concept.png

106 ms

home-concept-icons.png

home-concept-icons.png

107 ms

home-concept-item.png

home-concept-item.png

190 ms

joining_1.jpg

joining_1.jpg

184 ms

testing_1.jpg

testing_1.jpg

279 ms

developing_1.png

developing_1.png

372 ms

1_1.jpg

1_1.jpg

471 ms

2_1.jpg

2_1.jpg

570 ms

3_1.jpg

3_1.jpg

368 ms

4_1.jpg

4_1.jpg

382 ms

1at.png

1at.png

463 ms

1bbc.png

1bbc.png

460 ms

1ds.png

1ds.png

461 ms

1sd.png

1sd.png

476 ms

1tc.png

1tc.png

552 ms

1zd.png

1zd.png

555 ms

map-top.png

map-top.png

1782 ms

map-bottom.png

map-bottom.png

565 ms

cJZKeOuBrn4kERxqtaUH3aCWcynf_cDxXwCLxiixG1c.ttf

cJZKeOuBrn4kERxqtaUH3aCWcynf_cDxXwCLxiixG1c.ttf

49 ms

DXI1ORHCpsQm3Vp6mXoaTYnF5uFdDttMLvmWuJdhhgs.ttf

DXI1ORHCpsQm3Vp6mXoaTYnF5uFdDttMLvmWuJdhhgs.ttf

65 ms

MTP_ySUJH_bn48VBG8sNSonF5uFdDttMLvmWuJdhhgs.ttf

MTP_ySUJH_bn48VBG8sNSonF5uFdDttMLvmWuJdhhgs.ttf

91 ms

k3k702ZOKiLJc3WVjuplzInF5uFdDttMLvmWuJdhhgs.ttf

k3k702ZOKiLJc3WVjuplzInF5uFdDttMLvmWuJdhhgs.ttf

91 ms

EInbV5DfGHOiMmvb1Xr-honF5uFdDttMLvmWuJdhhgs.ttf

EInbV5DfGHOiMmvb1Xr-honF5uFdDttMLvmWuJdhhgs.ttf

91 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

664 ms

clhLqOv7MXn459PTh0gXYBayoCksK7A5ZWkzVNukUdQ.ttf

clhLqOv7MXn459PTh0gXYBayoCksK7A5ZWkzVNukUdQ.ttf

91 ms

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

reactos.org

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: