Tools & Wizards About Us

Report Summary

  • 52

    Performance

    Renders faster than
    69% of other websites

  • 39

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

chinaadec.com

汽车网校-二手车评估师_汽车维修工_汽车驾驶员_仓储管理员_报废汽车拆解工_电工_奥途教育

Page Load Speed

36.3 sec in total

First Response

2.6 sec

Resources Loaded

33 sec

Page Rendered

642 ms

About Website

Visit chinaadec.com now to see the best up-to-date Chinaadec content for China and also check out these interesting facts you probably never knew about chinaadec.com

中华汽车网校是正规的职业培训学校和技能评价机构，专业从事二手车评估师、汽车驾驶员、汽车维修工、仓储管理员、物流服务师、电工、报废汽车拆解工、蓄电池回收拆解、机动车检测维修工程师、信息通信网络运行管理员、网络与信息安全管理员、机动车鉴定评估师职业技能培训与资格证书考试，为企业经营备案许可提供服务，为技能人才职业发展畅通道路,助力军队文职人员技能岗报考与工勤人员技能岗晋升加薪。

Visit chinaadec.com

Key Findings

We analyzed Chinaadec.com page load time and found that the first response time was 2.6 sec and then it took 33.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

chinaadec.com performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

6/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

5/100

25%

SI (Speed Index)

Value12.2 s

3/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.049

99/100

15%

TTI (Time to Interactive)

Value7.4 s

48/100

10%

Network Requests Diagram

chinaadec.com

2618 ms

inc.css

1460 ms

common.js

727 ms

cmsJavaScript.js

736 ms

ScrollLeftRight.js

752 ms

Our browser made a total of 205 requests to load all elements on the main page. We found that 91% of them (186 requests) were addressed to the original Chinaadec.com, 3% (7 requests) were made to Img.t.sinajs.cn and 1% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (19.9 sec) belongs to the original domain Chinaadec.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 536.3 kB (6%)

Content Size

9.1 MB

After Optimization

8.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chinaadec.com main page is 9.1 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. 55% of websites need less resources to load. Images take 8.9 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 66.6 kB

  • Original 86.6 kB
  • After minification 83.4 kB
  • After compression 20.0 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 66.6 kB or 77% of the original size.

Image Optimization

-5%

Potential reduce by 407.2 kB

  • Original 8.9 MB
  • After minification 8.5 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. Chinaadec images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 13.8 kB

  • Original 103.7 kB
  • After minification 103.4 kB
  • After compression 89.9 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 13.8 kB or 13% of the original size.

CSS Optimization

-73%

Potential reduce by 48.7 kB

  • Original 66.5 kB
  • After minification 61.5 kB
  • After compression 17.7 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. Chinaadec.com needs all CSS files to be minified and compressed as it can save up to 48.7 kB or 73% of the original size.

Requests Breakdown

Number of requests can be reduced by 54 (27%)

Requests Now

202

After Optimization

148

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 202 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chinaadec. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

chinaadec.com accessibility score

39

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

[id] attributes on active, focusable elements are not unique

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

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

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

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

chinaadec.com best practices score

50

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

High

Browser errors were logged to the console

SEO Factors

chinaadec.com SEO score

79

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

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

High

Tap targets are not sized appropriately

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 Chinaadec.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 Chinaadec.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 Chinaadec. 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: