Tools & Wizards About Us

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 40

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

ditan360.com

中国低碳网--绿色低碳综合服务平台，成立于2009年，是绿色低碳领域的门户，现已成为集智库咨询、融媒体传播、碳中和公益基金、教育培训、论坛会展五维一体的综合服务平台。

Page Load Speed

32.6 sec in total

First Response

2 sec

Resources Loaded

29.9 sec

Page Rendered

686 ms

About Website

Click here to check amazing Ditan 360 content for China. Otherwise, check out these important facts you probably never knew about ditan360.com

中国低碳网（ditan360.com）成立于2009年，是绿色低碳领域的门户，长期以来积极配合国家传播绿色低碳发展理念，是国内外倡导“绿色、低碳、循环、可持续”生产生活方式、推动绿色低碳产业高质量发展、促进经济社会发展全面绿色低碳转型、开展绿色低碳领域国际交流的重要力量。中国低碳网作为生态文明建设的推动者和绿色低碳发展的践行者，专注于绿色节能低碳领域，现已成为集智库咨询、融媒体传播、碳中和公益基金...

Visit ditan360.com

Key Findings

We analyzed Ditan360.com page load time and found that the first response time was 2 sec and then it took 30.6 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. Unfortunately, there were 5 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

ditan360.com performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value2.2 s

95/100

25%

SI (Speed Index)

Value11.2 s

5/100

10%

TBT (Total Blocking Time)

Value1,100 ms

24/100

30%

CLS (Cumulative Layout Shift)

Value0.208

60/100

15%

TTI (Time to Interactive)

Value20.3 s

2/100

10%

Network Requests Diagram

ditan360.com

2028 ms

style.css

669 ms

demo.css

448 ms

video.css

444 ms

clouds.css

427 ms

Our browser made a total of 133 requests to load all elements on the main page. We found that all of those requests were addressed to Ditan360.com and no external sources were called. The less responsive or slowest element that took the longest time to load (20.3 sec) belongs to the original domain Ditan360.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 390.9 kB (9%)

Content Size

4.4 MB

After Optimization

4.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ditan360.com main page is 4.4 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. 70% of websites need less resources to load. Images take 4.2 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 129.3 kB

  • Original 147.6 kB
  • After minification 102.4 kB
  • After compression 18.4 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 45.2 kB, which is 31% 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 129.3 kB or 88% of the original size.

Image Optimization

-6%

Potential reduce by 240.4 kB

  • Original 4.2 MB
  • After minification 4.0 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. Ditan 360 images are well optimized though.

JavaScript Optimization

-33%

Potential reduce by 17.0 kB

  • Original 51.4 kB
  • After minification 51.2 kB
  • After compression 34.3 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 17.0 kB or 33% of the original size.

CSS Optimization

-40%

Potential reduce by 4.2 kB

  • Original 10.4 kB
  • After minification 10.4 kB
  • After compression 6.2 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. Ditan360.com needs all CSS files to be minified and compressed as it can save up to 4.2 kB or 40% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (8%)

Requests Now

125

After Optimization

115

  • Images
  • JavaScript
  • CSS

The browser has sent 125 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ditan 360. 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 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

ditan360.com accessibility score

40

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

ditan360.com best practices score

58

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

ditan360.com 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 Ditan360.com 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 Ditan360.com 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 Ditan 360. 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: