Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

wall21.cn

沃二一新媒体——更专业

Page Load Speed

21.2 sec in total

First Response

1.5 sec

Resources Loaded

18.8 sec

Page Rendered

848 ms

wall21.cn screenshot

About Website

Visit wall21.cn now to see the best up-to-date Wall 21 content for China and also check out these interesting facts you probably never knew about wall21.cn

沃二一门窗幕墙网(WALL21.CN)——致力门窗幕墙行业原创深度分析报导,专业、洞察力、创新思维、理性分析、战略高度,我们所探索的,是行业发展与市场规律的最佳商业逻辑。

Visit wall21.cn

Key Findings

We analyzed Wall21.cn page load time and found that the first response time was 1.5 sec and then it took 19.6 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.

Performance Metrics

wall21.cn performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

10/100

10%

LCP (Largest Contentful Paint)

Value23.9 s

0/100

25%

SI (Speed Index)

Value21.2 s

0/100

10%

TBT (Total Blocking Time)

Value15,640 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value32.8 s

0/100

10%

Network Requests Diagram

wall21.cn

1525 ms

error.aspx

9574 ms

main.css

1621 ms

jquery-1.3.2.min.js

2387 ms

jquery.cycle.all.pack.js

2402 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 93% of them (52 requests) were addressed to the original Wall21.cn, 4% (2 requests) were made to Hq.sinajs.cn and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (9.6 sec) belongs to the original domain Wall21.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 171.7 kB (26%)

Content Size

648.0 kB

After Optimization

476.3 kB

In fact, the total size of Wall21.cn main page is 648.0 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 425.8 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 46.3 kB

  • Original 59.6 kB
  • After minification 56.3 kB
  • After compression 13.3 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. 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 46.3 kB or 78% of the original size.

Image Optimization

-4%

Potential reduce by 16.4 kB

  • Original 425.8 kB
  • After minification 409.4 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. Wall 21 images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 93.5 kB

  • Original 142.4 kB
  • After minification 123.5 kB
  • After compression 48.9 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 93.5 kB or 66% of the original size.

CSS Optimization

-76%

Potential reduce by 15.5 kB

  • Original 20.2 kB
  • After minification 17.4 kB
  • After compression 4.8 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. Wall21.cn needs all CSS files to be minified and compressed as it can save up to 15.5 kB or 76% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (24%)

Requests Now

54

After Optimization

41

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wall 21. 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 as a result speed up the page load time.

Accessibility Review

wall21.cn accessibility score

63

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.

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

wall21.cn best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

wall21.cn SEO score

83

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

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Wall21.cn 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 Wall21.cn main page’s claimed encoding is utf8. 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

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