Tools & Wizards About Us
about.zz91.com screenshot

Report Summary

  • 82

    Performance

    Renders faster than
    87% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 50

    SEO

    Google-friendlier than
    18% of websites

about.zz91.com

关于我们-91再生

Page Load Speed

24.6 sec in total

First Response

3.4 sec

Resources Loaded

21 sec

Page Rendered

190 ms

about.zz91.com screenshot

About Website

Welcome to about.zz91.com homepage info - get ready to check About Zz 91 best content for China right away, or after learning these important things about about.zz91.com

ZZ91再生网是中国最大最旺的网上废料贸易市场,这里为您精选了废金属,废塑料,废纸,废橡胶,纺织废料,废旧设备,废电子电器,废玻璃,废皮革等各类废料供求信息、公司黄页、行业资讯、价格行情、展会信息等

Visit about.zz91.com

Key Findings

We analyzed About.zz91.com page load time and found that the first response time was 3.4 sec and then it took 21.1 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

about.zz91.com performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

75/100

25%

SI (Speed Index)

Value6.3 s

41/100

10%

TBT (Total Blocking Time)

Value190 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value3.6 s

91/100

10%

Network Requests Diagram

about.zz91.com

3444 ms

base.css

442 ms

about.css

842 ms

jquery-1.6.2.min.js

4617 ms

about.js

834 ms

Our browser made a total of 17 requests to load all elements on the main page. We found that 76% of them (13 requests) were addressed to the original About.zz91.com, 12% (2 requests) were made to Hm.baidu.com and 6% (1 request) were made to Img0.zz91.com. The less responsive or slowest element that took the longest time to load (12 sec) relates to the external source Lxbjs.baidu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 75.6 kB (39%)

Content Size

193.1 kB

After Optimization

117.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of About.zz91.com main page is 193.1 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. 15% of websites need less resources to load. Javascripts take 92.2 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 7.9 kB

  • Original 11.4 kB
  • After minification 10.3 kB
  • After compression 3.4 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. 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 7.9 kB or 70% of the original size.

Image Optimization

-0%

Potential reduce by 128 B

  • Original 79.4 kB
  • After minification 79.3 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. About Zz 91 images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 59.7 kB

  • Original 92.2 kB
  • After minification 92.0 kB
  • After compression 32.4 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 59.7 kB or 65% of the original size.

CSS Optimization

-77%

Potential reduce by 7.7 kB

  • Original 10.1 kB
  • After minification 8.7 kB
  • After compression 2.4 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. About.zz91.com needs all CSS files to be minified and compressed as it can save up to 7.7 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (19%)

Requests Now

16

After Optimization

13

  • Images
  • JavaScript
  • CSS

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of About Zz 91. 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

about.zz91.com

about.zz91.com

3444 ms

base.css

base.css

442 ms

about.css

about.css

842 ms

jquery-1.6.2.min.js

jquery-1.6.2.min.js

4617 ms

about.js

about.js

834 ms

logo.gif

logo.gif

868 ms

aboutlogo.gif

aboutlogo.gif

420 ms

khjz.jpg

khjz.jpg

415 ms

arr.gif

arr.gif

859 ms

bg.jpg

bg.jpg

860 ms

banner.jpg

banner.jpg

3875 ms

zst.jpg

zst.jpg

862 ms

ppt.jpg

ppt.jpg

1402 ms

zft.jpg

zft.jpg

1694 ms

hm.js

hm.js

749 ms

hm.gif

hm.gif

371 ms

lxb.js

lxb.js

11989 ms

Accessibility Review

about.zz91.com accessibility score

56

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

Links do not have a discernible name

Best Practices

about.zz91.com best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

about.zz91.com SEO score

50

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 About.zz91.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 About.zz91.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

about.zz91.com

Open Graph description is not detected on the main page of About Zz 91. 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: