Access oschina.net. OSCHINA - 中文开源技术交流社区

name

value

score

weighting

FCP (First Contentful Paint)

Value6.2 s

3/100

10%

LCP (Largest Contentful Paint)

Value6.4 s

10/100

25%

SI (Speed Index)

Value10.7 s

7/100

10%

TBT (Total Blocking Time)

Value3,350 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value46.3 s

0/100

10%

oschina.net

1364 ms

www.oschina.net

4348 ms

channel.css

762 ms

jquery.fancybox-1.3.4.css

763 ms

nature.css

2351 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 74% of them (51 requests) were addressed to the original Oschina.net, 26% (18 requests) were made to Static.oschina.net. The less responsive or slowest element that took the longest time to load (9.4 sec) belongs to the original domain Oschina.net.

Content Size

2.4 MB

After Optimization

884.3 kB

In fact, the total size of Oschina.net main page is 2.4 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. 30% of websites need less resources to load. Javascripts take 853.4 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 151.1 kB

Original 177.1 kB
After minification 124.0 kB
After compression 26.0 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 53.1 kB, which is 30% 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 151.1 kB or 85% of the original size.

Image Optimization

-12%

Potential reduce by 70.8 kB

Original 609.0 kB
After minification 538.3 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, OSCHINA needs image optimization as it can save up to 70.8 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 612.8 kB

Original 853.4 kB
After minification 774.4 kB
After compression 240.6 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 612.8 kB or 72% of the original size.

CSS Optimization

-90%

Potential reduce by 703.7 kB

Original 783.2 kB
After minification 721.7 kB
After compression 79.4 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. Oschina.net needs all CSS files to be minified and compressed as it can save up to 703.7 kB or 90% of the original size.

Requests Now

After Optimization

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of OSCHINA. 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 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

ZH
Language Claimed

ZH
Encoding

UTF-8

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

oschina.net

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

Report Summary

Performance

Accessibility

Best Practices

SEO

OSCHINA - 中文开源技术交流社区

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

oschina.net

www.oschina.net

channel.css

jquery.fancybox-1.3.4.css

nature.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

oschina.net

www.oschina.net

channel.css

jquery.fancybox-1.3.4.css

nature.css

object.css

people.css

place.css

Sysmbols.css

twemoji.css

jquery-1.7.1.min.js

jquery.form.js

jquery.fancybox-fixed.js

tip-yellowsimple.css

jquery.poshytip.min.js

oschina.js

utils.js

channel.js

oschina2013.css

font-awesome.css

index_banner_one_qAQWm.jpg

down3.gif

logo.svg

newindex-01.svg

newindex-02.svg

newindex-03.svg

icons2.gif

thread_2.gif

thread_1.gif

img.gif

team.png

git.png

sonar.png

paas.png

ostools.gif

runjs_logo.gif

maven.gif

logo.png

index_banner_two_xHPVa.jpg

index_banner_three_nWxTV.jpg

index_banner_four_aBYIZ.jpg

index_banner_five_flMjB.jpg

2522392_50.jpg