Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 42

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

china-led.net

半导体照明网——共建LED健康生态圈!

Page Load Speed

40.5 sec in total

First Response

1.3 sec

Resources Loaded

38.8 sec

Page Rendered

405 ms

china-led.net screenshot

About Website

Click here to check amazing China Led content for China. Otherwise, check out these important facts you probably never knew about china-led.net

半导体照明网是国内最早的LED网站,是国家半导体照明工程唯一的网上信息门户。内容覆盖LED政策、LED产业趋势、LED技术交流、LED市场动态、LED产品价格等方面,在国家半导体照明工程协调领导小组办公室指导和成员单位的大力支持下,经过十几年的发展,已成为LED行业最权威的综合性电子商务平台。

Visit china-led.net

Key Findings

We analyzed China-led.net page load time and found that the first response time was 1.3 sec and then it took 39.2 sec 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

china-led.net performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value8.9 s

15/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value11.9 s

16/100

10%

Network Requests Diagram

china-led.net

1262 ms

www.china-led.net

1718 ms

style.css

765 ms

index.css

1909 ms

lang.js

768 ms

Our browser made a total of 153 requests to load all elements on the main page. We found that 53% of them (81 requests) were addressed to the original China-led.net, 18% (28 requests) were made to Afp.csbew.com and 7% (10 requests) were made to Ww3.sinaimg.cn. The less responsive or slowest element that took the longest time to load (11.1 sec) relates to the external source Afp.csbew.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 480.0 kB (27%)

Content Size

1.8 MB

After Optimization

1.3 MB

In fact, the total size of China-led.net main page is 1.8 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 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 103.9 kB

  • Original 123.5 kB
  • After minification 111.2 kB
  • After compression 19.6 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 103.9 kB or 84% of the original size.

Image Optimization

-9%

Potential reduce by 119.6 kB

  • Original 1.3 MB
  • After minification 1.1 MB

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. China Led images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 194.6 kB

  • Original 302.4 kB
  • After minification 294.0 kB
  • After compression 107.7 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 194.6 kB or 64% of the original size.

CSS Optimization

-80%

Potential reduce by 61.9 kB

  • Original 77.3 kB
  • After minification 72.2 kB
  • After compression 15.4 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. China-led.net needs all CSS files to be minified and compressed as it can save up to 61.9 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (21%)

Requests Now

150

After Optimization

118

The browser has sent 150 CSS, Javascripts, AJAX and image requests in order to completely render the main page of China Led. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

china-led.net accessibility score

42

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.

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Definition list items are not wrapped in <dl> elements

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Best Practices

china-led.net best practices score

50

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

china-led.net SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise China-led.net can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 China-led.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

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