Tools & Wizards About Us
read.dangdang.com screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    67% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 80

    SEO

    Google-friendlier than
    42% of websites

read.dangdang.com

当当云阅读-数字阅读和听书平台-电子书、听书

Page Load Speed

24.3 sec in total

First Response

1.8 sec

Resources Loaded

21.6 sec

Page Rendered

779 ms

read.dangdang.com screenshot

About Website

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

当当云阅读提供最丰富正版内容的专业数字阅读和听书平台。现有超过50万种正版数字读物，涵盖电子书、听书、漫画等全媒体数字阅读形式。

Visit read.dangdang.com

Key Findings

We analyzed Read.dangdang.com page load time and found that the first response time was 1.8 sec and then it took 22.4 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. Unfortunately, there were 11 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

read.dangdang.com performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

81/100

10%

LCP (Largest Contentful Paint)

Value12.9 s

0/100

25%

SI (Speed Index)

Value16.5 s

0/100

10%

TBT (Total Blocking Time)

Value180 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0.142

78/100

15%

TTI (Time to Interactive)

Value16.5 s

5/100

10%

Network Requests Diagram

read.dangdang.com

1830 ms

20100719_103741_46.css

698 ms

20101213_165625_32.css

692 ms

jquery-1.3.2.min.js

1196 ms

reading_public081212.css

548 ms

Our browser made a total of 159 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Read.dangdang.com, 39% (62 requests) were made to Img4.ddimg.cn and 22% (35 requests) were made to Static.dangdang.com. The less responsive or slowest element that took the longest time to load (19.6 sec) relates to the external source Img3.dangdang.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 556.9 kB (42%)

Content Size

1.3 MB

After Optimization

760.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Read.dangdang.com main page is 1.3 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. 35% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 116.2 kB

  • Original 142.2 kB
  • After minification 122.2 kB
  • After compression 25.9 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 20.0 kB, which is 14% 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 116.2 kB or 82% of the original size.

Image Optimization

-35%

Potential reduce by 380.9 kB

  • Original 1.1 MB
  • After minification 714.9 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. Obviously, Read Dangdang needs image optimization as it can save up to 380.9 kB or 35% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-55%

Potential reduce by 9.3 kB

  • Original 17.1 kB
  • After minification 17.1 kB
  • After compression 7.7 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 9.3 kB or 55% of the original size.

CSS Optimization

-81%

Potential reduce by 50.4 kB

  • Original 62.2 kB
  • After minification 56.8 kB
  • After compression 11.7 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. Read.dangdang.com needs all CSS files to be minified and compressed as it can save up to 50.4 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (25%)

Requests Now

138

After Optimization

104

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 138 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Read Dangdang. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

read.dangdang.com

read.dangdang.com

1830 ms

20100719_103741_46.css

20100719_103741_46.css

698 ms

20101213_165625_32.css

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692 ms

jquery-1.3.2.min.js

jquery-1.3.2.min.js

1196 ms

reading_public081212.css

reading_public081212.css

548 ms

unite_header20100419.css

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581 ms

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19210 ms

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418 ms

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Accessibility Review

read.dangdang.com accessibility score

86

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

Links do not have a discernible name

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

read.dangdang.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

read.dangdang.com SEO score

80

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

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Read.dangdang.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 Read.dangdang.com main page’s claimed encoding is gb2312. 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

read.dangdang.com

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