Tools & Wizards About Us

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 53

    Accessibility

    Visual factors better than
    that of 22% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

zcwz.com

华轴网-轴承,轴承网,滚动轴承,中崋轴承网-专业的轴承型号查询网站

Page Load Speed

13.3 sec in total

First Response

512 ms

Resources Loaded

12.5 sec

Page Rendered

309 ms

About Website

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

中崋轴承网是中国专业的轴承行业信息网站，中国专业的轴承型号查询系统，提供各类进口轴承厂家信息，包括进口轴承产品信息、轴承企业、轴承供求信息、轴承行业资讯、轴承展会、轴承型号查询、轴承现货、轴承品牌分类、轴承贸易知识、轴承知识、轴承机械、轴承论坛等频道

Visit zcwz.com

Key Findings

We analyzed Zcwz.com page load time and found that the first response time was 512 ms and then it took 12.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

zcwz.com performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

4/100

10%

LCP (Largest Contentful Paint)

Value26.6 s

0/100

25%

SI (Speed Index)

Value12.0 s

4/100

10%

TBT (Total Blocking Time)

Value180 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0.114

86/100

15%

TTI (Time to Interactive)

Value21.3 s

1/100

10%

Network Requests Diagram

zcwz.com

512 ms

www.zcwz.com

721 ms

www.zcwz.com

1087 ms

css.zcwz.com

1051 ms

js.zcwz.com

1709 ms

Our browser made a total of 138 requests to load all elements on the main page. We found that 4% of them (5 requests) were addressed to the original Zcwz.com, 30% (42 requests) were made to Fimg.zcwz.com and 24% (33 requests) were made to File.zcwz.com. The less responsive or slowest element that took the longest time to load (8 sec) relates to the external source File.zcwz.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 373.0 kB (12%)

Content Size

3.2 MB

After Optimization

2.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zcwz.com main page is 3.2 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. 60% of websites need less resources to load. Images take 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 79.7 kB

  • Original 96.3 kB
  • After minification 94.9 kB
  • After compression 16.6 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 79.7 kB or 83% of the original size.

Image Optimization

-8%

Potential reduce by 217.8 kB

  • Original 2.9 MB
  • After minification 2.7 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. Zcwz images are well optimized though.

JavaScript Optimization

-37%

Potential reduce by 72.2 kB

  • Original 195.2 kB
  • After minification 195.2 kB
  • After compression 123.0 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 72.2 kB or 37% of the original size.

CSS Optimization

-28%

Potential reduce by 3.3 kB

  • Original 11.7 kB
  • After minification 11.7 kB
  • After compression 8.5 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. Zcwz.com needs all CSS files to be minified and compressed as it can save up to 3.3 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (14%)

Requests Now

134

After Optimization

115

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 134 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zcwz. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

zcwz.com accessibility score

53

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.

Tables and lists

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

Impact

Issue

High

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Best Practices

zcwz.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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

zcwz.com SEO score

62

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 Zcwz.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 Zcwz.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

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