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libvirt.org screenshot

Report Summary

  • 81

    Performance

    Renders faster than
    87% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 88

    SEO

    Google-friendlier than
    66% of websites

libvirt.org

libvirt: The virtualization API

Page Load Speed

1.2 sec in total

First Response

204 ms

Resources Loaded

814 ms

Page Rendered

147 ms

libvirt.org screenshot

About Website

Visit libvirt.org now to see the best up-to-date Libvirt content for Denmark and also check out these interesting facts you probably never knew about libvirt.org

libvirt, virtualization, virtualization API

Visit libvirt.org

Key Findings

We analyzed Libvirt.org page load time and found that the first response time was 204 ms and then it took 961 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

libvirt.org performance score

81

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value3.9 s

52/100

25%

SI (Speed Index)

Value3.6 s

86/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.005

100/100

15%

TTI (Time to Interactive)

Value4.6 s

81/100

10%

Network Requests Diagram

libvirt.org

204 ms

main.css

171 ms

libvirtLogo.png

260 ms

et.png

174 ms

generic.css

173 ms

Our browser made a total of 8 requests to load all elements on the main page. We found that all of those requests were addressed to Libvirt.org and no external sources were called. The less responsive or slowest element that took the longest time to load (260 ms) belongs to the original domain Libvirt.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 16.0 kB (19%)

Content Size

85.7 kB

After Optimization

69.6 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Libvirt.org main page is 85.7 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 70.6 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 4.7 kB

  • Original 6.6 kB
  • After minification 5.3 kB
  • After compression 1.9 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. This page needs HTML code to be minified as it can gain 1.3 kB, which is 20% 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 4.7 kB or 71% of the original size.

Image Optimization

-7%

Potential reduce by 4.7 kB

  • Original 70.6 kB
  • After minification 65.8 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. Libvirt images are well optimized though.

CSS Optimization

-78%

Potential reduce by 6.6 kB

  • Original 8.5 kB
  • After minification 6.0 kB
  • After compression 1.9 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. Libvirt.org needs all CSS files to be minified and compressed as it can save up to 6.6 kB or 78% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

7

After Optimization

7

  • Images
  • CSS

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Libvirt. According to our analytics all requests are already optimized.

Network Requests Diagram

libvirt.org

libvirt.org

204 ms

main.css

main.css

171 ms

libvirtLogo.png

libvirtLogo.png

260 ms

et.png

et.png

174 ms

generic.css

generic.css

173 ms

libvirt.css

libvirt.css

176 ms

libvirt-header-bg.png

libvirt-header-bg.png

91 ms

libvirt-header-logo.png

libvirt-header-logo.png

260 ms

Accessibility Review

libvirt.org accessibility score

78

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.

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

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

Form elements do not have associated labels

Best Practices

libvirt.org best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

libvirt.org SEO score

88

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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 Libvirt.org 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 Libvirt.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

libvirt.org

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