Access 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。

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

72/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value220 ms

88/100

30%

CLS (Cumulative Layout Shift)

Value0.11

87/100

15%

TTI (Time to Interactive)

Value4.8 s

78/100

10%

ditan360.com

12398 ms

Default.css

4292 ms

setTab.js

3377 ms

jquery-1.4a2.min.js

6541 ms

lrtk.css

522 ms

Our browser made a total of 65 requests to load all elements on the main page. We found that 95% of them (62 requests) were addressed to the original Ditan360.com, 3% (2 requests) were made to Hm.baidu.com and 2% (1 request) were made to Eiv.baidu.com. The less responsive or slowest element that took the longest time to load (20 sec) belongs to the original domain Ditan360.com.

Content Size

1.1 MB

After Optimization

768.7 kB

In fact, the total size of Ditan360.com main page is 1.1 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. Only 10% of websites need less resources to load. Images take 735.9 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 121.2 kB

Original 139.5 kB
After minification 69.0 kB
After compression 18.3 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 70.5 kB, which is 51% 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 121.2 kB or 87% of the original size.

Image Optimization

-7%

Potential reduce by 52.6 kB

Original 735.9 kB
After minification 683.3 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. Ditan 360 images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 136.6 kB

Original 200.4 kB
After minification 198.7 kB
After compression 63.8 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 136.6 kB or 68% of the original size.

CSS Optimization

-81%

Potential reduce by 14.2 kB

Original 17.6 kB
After minification 12.2 kB
After compression 3.4 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. Ditan360.com needs all CSS files to be minified and compressed as it can save up to 14.2 kB or 81% of the original size.

Requests Now

After Optimization

The browser has sent 62 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 6 to 1 for JavaScripts 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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

High

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

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

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

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

Language and Encoding

Language Detected

ZH
Language Claimed

N/A
Encoding

GB2312

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 gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

ditan360.com

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:

Report Summary

Performance

Accessibility

Best Practices

SEO

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

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

ditan360.com

Default.css

setTab.js

jquery-1.4a2.min.js

lrtk.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

ditan360.com

Default.css

setTab.js

jquery-1.4a2.min.js

lrtk.css

jquery.min.js

lrtk.js

dingtiaoxin.css

jquery.KinSlideshow-1.2.1.min.js

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