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21cma.net screenshot

Report Summary

  • 94

    Performance

    Renders faster than
    93% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

21cma.net

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Page Load Speed

43.7 sec in total

First Response

678 ms

Resources Loaded

42.8 sec

Page Rendered

148 ms

21cma.net screenshot

About Website

Welcome to 21cma.net homepage info - get ready to check 21 Cma best content for China right away, or after learning these important things about 21cma.net

首页

Visit 21cma.net

Key Findings

We analyzed 21cma.net page load time and found that the first response time was 678 ms and then it took 43 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 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

21cma.net performance score

94

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

88/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

93/100

25%

SI (Speed Index)

Value4.7 s

69/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value1.9 s

100/100

10%

Network Requests Diagram

21cma.net

678 ms

www.21cma.net

716 ms

style_6_common.css

325 ms

common.js

643 ms

portal.js

428 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 91% of them (31 requests) were addressed to the original 21cma.net, 6% (2 requests) were made to Hm.baidu.com and 3% (1 request) were made to Union.rising.com.cn. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source Union.rising.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 40.8 kB (20%)

Content Size

201.6 kB

After Optimization

160.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 21cma.net main page is 201.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Images take 119.6 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 35.0 kB

  • Original 44.6 kB
  • After minification 44.5 kB
  • After compression 9.6 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 35.0 kB or 78% of the original size.

Image Optimization

-4%

Potential reduce by 4.4 kB

  • Original 119.6 kB
  • After minification 115.2 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. 21 Cma images are well optimized though.

JavaScript Optimization

-6%

Potential reduce by 1.4 kB

  • Original 22.3 kB
  • After minification 22.3 kB
  • After compression 21.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-1%

Potential reduce by 104 B

  • Original 15.2 kB
  • After minification 15.2 kB
  • After compression 15.1 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. 21cma.net has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 8 (29%)

Requests Now

28

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 21 Cma. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

21cma.net

21cma.net

678 ms

www.21cma.net

www.21cma.net

716 ms

style_6_common.css

style_6_common.css

325 ms

common.js

common.js

643 ms

portal.js

portal.js

428 ms

logging.js

logging.js

427 ms

md5.js

md5.js

428 ms

background01.png

background01.png

214 ms

bgimg1.jpg

bgimg1.jpg

217 ms

logo-21cma-yun.png

logo-21cma-yun.png

229 ms

qq_login.gif

qq_login.gif

221 ms

go.gif

go.gif

216 ms

jieqi03.jpg

jieqi03.jpg

451 ms

hyts.jpg

hyts.jpg

621 ms

n4.jpg

n4.jpg

429 ms

n3.jpg

n3.jpg

444 ms

n2.jpg

n2.jpg

458 ms

10040820035ad4d9e32866e9c1.gif

10040820035ad4d9e32866e9c1.gif

449 ms

px.png

px.png

630 ms

newarow.gif

newarow.gif

644 ms

pn.png

pn.png

648 ms

nv.png

nv.png

645 ms

qmenu.png

qmenu.png

649 ms

nv_a.png

nv_a.png

813 ms

search.png

search.png

834 ms

thead.png

thead.png

816 ms

dot.gif

dot.gif

805 ms

bs_2_ft.png

bs_2_ft.png

808 ms

bs_2_hd.png

bs_2_hd.png

816 ms

bs_2_ft_r.png

bs_2_ft_r.png

977 ms

h.js

h.js

433 ms

h.js

h.js

19848 ms

TrojanInspect.aspx

TrojanInspect.aspx

19999 ms

scrolltop.png

scrolltop.png

429 ms

Accessibility Review

21cma.net accessibility score

66

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

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

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Best Practices

21cma.net best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

21cma.net SEO score

69

Search Engine Optimization Advices

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

    GBK

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 21cma.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 21cma.net main page’s claimed encoding is gbk. 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

21cma.net

Open Graph description is not detected on the main page of 21 Cma. 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: