Report Summary

  • 42

    Performance

    Renders faster than
    63% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    57% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

zol.com.cn

中关村在线 - 大中华区专业IT网站 - The valuable and professional IT business website in Greater China

Page Load Speed

21 sec in total

First Response

912 ms

Resources Loaded

19.6 sec

Page Rendered

556 ms

zol.com.cn screenshot

About Website

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

中国领先的IT信息与商务门户, 包括新闻, 商城, 硬件, 下载, 游戏, 手机, 评测等40个大型频道,每天发布大量各类产品促销信息及文章专题,是IT行业的厂商, 经销商, IT产品, 解决方案的提供场所

Visit zol.com.cn

Key Findings

We analyzed Zol.com.cn page load time and found that the first response time was 912 ms and then it took 20.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

zol.com.cn performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value10.0 s

0/100

25%

SI (Speed Index)

Value11.7 s

4/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value13.9 s

10/100

10%

Network Requests Diagram

zol.com.cn

912 ms

www.zol.com.cn

1552 ms

top_bar_bg.png

5026 ms

d19b48deb203f8b89cb926f260216363.jpg

5025 ms

1448870894.jpg

6025 ms

Our browser made a total of 104 requests to load all elements on the main page. We found that 4% of them (4 requests) were addressed to the original Zol.com.cn, 23% (24 requests) were made to Icon.zol-img.com.cn and 10% (10 requests) were made to Picc.zol-img.com.cn. The less responsive or slowest element that took the longest time to load (7.9 sec) relates to the external source Zdw.w8.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.4 MB (42%)

Content Size

8.1 MB

After Optimization

4.7 MB

In fact, the total size of Zol.com.cn main page is 8.1 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. 45% of websites need less resources to load. Images take 4.3 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 332.7 kB

  • Original 419.0 kB
  • After minification 403.6 kB
  • After compression 86.3 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 332.7 kB or 79% of the original size.

Image Optimization

-15%

Potential reduce by 632.5 kB

  • Original 4.3 MB
  • After minification 3.7 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. Obviously, Zol needs image optimization as it can save up to 632.5 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 2.2 MB

  • Original 3.0 MB
  • After minification 3.0 MB
  • After compression 849.0 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 2.2 MB or 72% of the original size.

CSS Optimization

-82%

Potential reduce by 224.4 kB

  • Original 275.3 kB
  • After minification 267.0 kB
  • After compression 50.9 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. Zol.com.cn needs all CSS files to be minified and compressed as it can save up to 224.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (20%)

Requests Now

101

After Optimization

81

The browser has sent 101 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zol. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

zol.com.cn accessibility score

61

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

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

zol.com.cn best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

zol.com.cn SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

    GBK

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zol.com.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 Zol.com.cn main page’s claimed encoding is gbk. 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 Zol. 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: