Tools & Wizards About Us
zol.com screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

zol.com

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

25.8 sec in total

First Response

1.4 sec

Resources Loaded

23.7 sec

Page Rendered

686 ms

zol.com screenshot

About Website

Click here to check amazing Zol content for China. Otherwise, check out these important facts you probably never knew about zol.com

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

Key Findings

We analyzed Zol.com page load time and found that the first response time was 1.4 sec and then it took 24.4 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 performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value13.1 s

0/100

25%

SI (Speed Index)

Value15.5 s

0/100

10%

TBT (Total Blocking Time)

Value4,130 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value17.7 s

4/100

10%

Network Requests Diagram

zol.com

1443 ms

www.zol.com

3057 ms

public.css

851 ms

newindex.css

890 ms

feedBack.css

908 ms

Our browser made a total of 142 requests to load all elements on the main page. We found that 10% of them (14 requests) were addressed to the original Zol.com, 18% (26 requests) were made to I1.mercrt.fd.zol-img.com.cn and 16% (23 requests) were made to I2.mercrt.fd.zol-img.com.cn. The less responsive or slowest element that took the longest time to load (8.1 sec) relates to the external source Icon.zol-img.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.1 MB (29%)

Content Size

10.6 MB

After Optimization

7.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zol.com main page is 10.6 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. 70% of websites need less resources to load. Images take 9.8 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 202.1 kB

  • Original 229.3 kB
  • After minification 144.5 kB
  • After compression 27.3 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. This page needs HTML code to be minified as it can gain 84.8 kB, which is 37% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 202.1 kB or 88% of the original size.

Image Optimization

-25%

Potential reduce by 2.5 MB

  • Original 9.8 MB
  • After minification 7.4 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 2.5 MB or 25% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-78%

Potential reduce by 386.6 kB

  • Original 496.7 kB
  • After minification 348.9 kB
  • After compression 110.1 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 386.6 kB or 78% of the original size.

CSS Optimization

-80%

Potential reduce by 72.5 kB

  • Original 90.5 kB
  • After minification 78.4 kB
  • After compression 18.0 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 needs all CSS files to be minified and compressed as it can save up to 72.5 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (9%)

Requests Now

139

After Optimization

127

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 139 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 9 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zol.com

zol.com

1443 ms

www.zol.com

www.zol.com

3057 ms

public.css

public.css

851 ms

newindex.css

newindex.css

890 ms

feedBack.css

feedBack.css

908 ms

shopLoginBox.css

shopLoginBox.css

1231 ms

side_toolbar.css

side_toolbar.css

2163 ms

jquery-1.8.1.js

jquery-1.8.1.js

4889 ms

index.php

index.php

1343 ms

ExcellentFeedBack.js

ExcellentFeedBack.js

435 ms

shopLoginLayer.js

shopLoginLayer.js

908 ms

perfect-scrollbar.jquery.min.js

perfect-scrollbar.jquery.min.js

371 ms

side_toolbar.js

side_toolbar.js

348 ms

side_toolbar_fun_v1.0.js

side_toolbar_fun_v1.0.js

746 ms

pv.js

pv.js

880 ms

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5878 ms

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3674 ms

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1617 ms

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1975 ms

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1918 ms

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3512 ms

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947 ms

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995 ms

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3069 ms

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7058 ms

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2144 ms

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919 ms

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1383 ms

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2345 ms

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2381 ms

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3499 ms

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3490 ms

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3491 ms

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3505 ms

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3496 ms

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3498 ms

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3509 ms

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3506 ms

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3536 ms

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3516 ms

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3532 ms

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3514 ms

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3517 ms

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3518 ms

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3524 ms

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3524 ms

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3532 ms

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980 ms

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939 ms

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927 ms

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940 ms

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1005 ms

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954 ms

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945 ms

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967 ms

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1900 ms

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1883 ms

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1902 ms

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1900 ms

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1873 ms

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1906 ms

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1893 ms

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1913 ms

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1914 ms

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1908 ms

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1907 ms

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1912 ms

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1927 ms

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1917 ms

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1933 ms

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1957 ms

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1938 ms

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1933 ms

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1934 ms

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1950 ms

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2006 ms

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1987 ms

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1976 ms

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1951 ms

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1963 ms

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1962 ms

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1947 ms

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1967 ms

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1958 ms

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2043 ms

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1994 ms

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3638 ms

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3674 ms

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3651 ms

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3650 ms

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3648 ms

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3662 ms

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3670 ms

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3667 ms

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3666 ms

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3666 ms

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3693 ms

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3676 ms

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3683 ms

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3694 ms

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3687 ms

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3679 ms

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3686 ms

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3698 ms

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3723 ms

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3726 ms

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3694 ms

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3700 ms

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1579 ms

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1574 ms

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1554 ms

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1557 ms

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2109 ms

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1585 ms

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1593 ms

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1595 ms

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1591 ms

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1591 ms

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1613 ms

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1606 ms

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1604 ms

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1643 ms

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1616 ms

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1649 ms

index.php

index.php

349 ms

topbar_ico.png

topbar_ico.png

2523 ms

shop_wechat.png

shop_wechat.png

3404 ms

201603030-0310-1920-50.jpg

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8097 ms

logo_180x50.png

logo_180x50.png

2975 ms

row_title_v1.png

row_title_v1.png

4200 ms

footer.png

footer.png

3448 ms

research_ico.png

research_ico.png

3854 ms

index.php

index.php

335 ms

font_1449039318_082375.woff

font_1449039318_082375.woff

152 ms

bar_ico.png

bar_ico.png

4290 ms

index.php

index.php

344 ms

p.ht

p.ht

672 ms

dot.gif

dot.gif

67 ms

pvhit0001.gif

pvhit0001.gif

1023 ms

h.js

h.js

1308 ms

hm.gif

hm.gif

440 ms

button_121.gif

button_121.gif

155 ms

Accessibility Review

zol.com accessibility score

59

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

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 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 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 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 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

zol.com

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: