Tools & Wizards About Us
libuv.org screenshot

Report Summary

  • 95

    Performance

    Renders faster than
    93% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

libuv.org

libuv | Cross-platform asynchronous I/O

Page Load Speed

288 ms in total

First Response

39 ms

Resources Loaded

149 ms

Page Rendered

100 ms

libuv.org screenshot

About Website

Welcome to libuv.org homepage info - get ready to check Libuv best content for China right away, or after learning these important things about libuv.org

libuv, a platform abstraction library with focus on asynchronous i/o.

Visit libuv.org

Key Findings

We analyzed Libuv.org page load time and found that the first response time was 39 ms and then it took 249 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

libuv.org performance score

95

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

85/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

88/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.0 s

99/100

10%

Network Requests Diagram

libuv.org

39 ms

libuv.org

34 ms

bootstrap.min.css

23 ms

main.css

19 ms

main.js

20 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that 83% of them (5 requests) were addressed to the original Libuv.org, 17% (1 request) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (39 ms) belongs to the original domain Libuv.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 52.6 kB (33%)

Content Size

157.9 kB

After Optimization

105.3 kB

  • HTML
  • Images

In fact, the total size of Libuv.org main page is 157.9 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 155.7 kB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 1.4 kB

  • Original 2.2 kB
  • After minification 1.8 kB
  • After compression 808 B

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 469 B, which is 21% 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 1.4 kB or 64% of the original size.

Image Optimization

-33%

Potential reduce by 51.2 kB

  • Original 155.7 kB
  • After minification 104.5 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, Libuv needs image optimization as it can save up to 51.2 kB or 33% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

We found no issues to fix!

Requests Now

4

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Libuv. According to our analytics all requests are already optimized.

Network Requests Diagram

libuv.org

libuv.org

39 ms

libuv.org

libuv.org

34 ms

bootstrap.min.css

bootstrap.min.css

23 ms

main.css

main.css

19 ms

main.js

main.js

20 ms

libuv-bg.png

libuv-bg.png

25 ms

Accessibility Review

libuv.org accessibility score

100

Accessibility Issues

Best Practices

libuv.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

libuv.org SEO score

100

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

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 Libuv.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 Libuv.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

libuv.org

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