Tools & Wizards About Us
021chang.cn screenshot

Report Summary

  • 87

    Performance

    Renders faster than
    89% of other websites

  • 41

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

021chang.cn

上海厂房网-上海厂房出租出售,仓库出租,土地出售转让等招商信息免费平台

Page Load Speed

10.3 sec in total

First Response

2.1 sec

Resources Loaded

7.8 sec

Page Rendered

433 ms

021chang.cn screenshot

About Website

Welcome to 021chang.cn homepage info - get ready to check 021 Chang best content right away, or after learning these important things about 021chang.cn

上海厂房网是提供上海厂房出租,上海厂房出售信息,上海厂房租赁,上海厂房招商信息,上海厂房招租,上海仓库出租,上海土地出售转让,工业园区厂房租售信息网一流资源网站!

Visit 021chang.cn

Key Findings

We analyzed 021chang.cn page load time and found that the first response time was 2.1 sec and then it took 8.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

021chang.cn performance score

87

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

76/100

25%

SI (Speed Index)

Value7.1 s

32/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.015

100/100

15%

TTI (Time to Interactive)

Value1.7 s

100/100

10%

Network Requests Diagram

021chang.cn

2067 ms

global.css

1024 ms

sindex.css

866 ms

thea24.js

1032 ms

fwrx.gif

867 ms

Our browser made a total of 85 requests to load all elements on the main page. We found that all of those requests were addressed to 021chang.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (5.6 sec) belongs to the original domain 021chang.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 91.5 kB (6%)

Content Size

1.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 021chang.cn main page is 1.4 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. 20% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 45.1 kB

  • Original 56.0 kB
  • After minification 55.4 kB
  • After compression 11.0 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 45.1 kB or 80% of the original size.

Image Optimization

-2%

Potential reduce by 33.1 kB

  • Original 1.3 MB
  • After minification 1.3 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. 021 Chang images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 36 B
  • After minification 36 B
  • After compression 36 B

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

-79%

Potential reduce by 13.4 kB

  • Original 16.8 kB
  • After minification 13.9 kB
  • After compression 3.5 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. 021chang.cn needs all CSS files to be minified and compressed as it can save up to 13.4 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (40%)

Requests Now

84

After Optimization

50

  • Images
  • JavaScript
  • CSS

The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 021 Chang. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

021chang.cn

021chang.cn

2067 ms

global.css

global.css

1024 ms

sindex.css

sindex.css

866 ms

thea24.js

thea24.js

1032 ms

fwrx.gif

fwrx.gif

867 ms

set_index.gif

set_index.gif

624 ms

set_sc.gif

set_sc.gif

668 ms

logo.jpg

logo.jpg

1123 ms

thea25.js

thea25.js

1033 ms

body_bg.jpg

body_bg.jpg

193 ms

top_bg.gif

top_bg.gif

193 ms

index_a.gif

index_a.gif

283 ms

ggao.gif

ggao.gif

284 ms

fabu.gif

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282 ms

icon_01.jpg

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449 ms

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388 ms

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1181 ms

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1231 ms

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1793 ms

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583 ms

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1102 ms

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983 ms

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1297 ms

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1371 ms

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1477 ms

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1650 ms

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1807 ms

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1794 ms

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1867 ms

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1866 ms

bk_bottom_950.gif

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2115 ms

top640.gif

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2164 ms

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2152 ms

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2195 ms

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2190 ms

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2193 ms

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2722 ms

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2730 ms

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2838 ms

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2970 ms

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2190 ms

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3314 ms

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2376 ms

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3188 ms

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3389 ms

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3143 ms

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3016 ms

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5559 ms

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3372 ms

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3259 ms

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3334 ms

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4942 ms

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3507 ms

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3585 ms

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3669 ms

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3699 ms

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4463 ms

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3626 ms

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3446 ms

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3466 ms

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3452 ms

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3613 ms

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3544 ms

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3451 ms

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3452 ms

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3313 ms

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3318 ms

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3330 ms

phone.jpg

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3430 ms

ico_qq.gif

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3428 ms

qq.jpg

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3194 ms

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3195 ms

email.jpg

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3432 ms

fang_nav_bg.gif

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3298 ms

current_tab.gif

current_tab.gif

3295 ms

Menu.gif

Menu.gif

3312 ms

line.jpg

line.jpg

2834 ms

sousuo.jpg

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2953 ms

bk_middle_950.gif

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2842 ms

middle640.gif

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2732 ms

hot_cfbg.jpg

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2734 ms

vipbox.gif

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2401 ms

middle310.gif

middle310.gif

2342 ms

Accessibility Review

021chang.cn accessibility score

41

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

High

<object> elements do not have alternate text

Best Practices

021chang.cn 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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

021chang.cn SEO score

62

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

High

Document uses plugins

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 021chang.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 021chang.cn 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

021chang.cn

Open Graph description is not detected on the main page of 021 Chang. 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: