Tools & Wizards About Us

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 50

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 50

    SEO

    Google-friendlier than
    18% of websites

designerbooks.com.cn

迪赛纳品牌设计书店正版设计图书,设计杂志期刊,设计书籍国外进口设计类的建筑设计_景观设计_室内设计_平面设计_广告设计_艺术设计_工业设计_景观设计_产品设计_服装设计等设计书店的图书_杂志_期刊_书籍-北京迪赛纳图书有限公司

Page Load Speed

50.1 sec in total

First Response

5 sec

Resources Loaded

44.8 sec

Page Rendered

240 ms

About Website

Welcome to designerbooks.com.cn homepage info - get ready to check Designerbooks best content right away, or after learning these important things about designerbooks.com.cn

迪赛纳设计书店11年10家实体店,全场满200免运费!提供国内外专业设计图书,设计杂志,设计书籍的专业设计书店提供5000个品种的设计类图书.提供最新最全的设计杂志期刊订阅服务，提供国内外最新的建设设计、景观设计、室内设计、平面设计、广告设计、艺术设计、工业设计、产品设计、机械设计、服装设计等设计类图书_期刊_书籍-全场特价3折起,实体店城市有北京,上海,天津,深圳,广州,杭州,南京,武汉,成都等...

Visit designerbooks.com.cn

Key Findings

We analyzed Designerbooks.com.cn page load time and found that the first response time was 5 sec and then it took 45.1 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.

Performance Metrics

designerbooks.com.cn performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.052

98/100

15%

TTI (Time to Interactive)

Value7.7 s

46/100

10%

Network Requests Diagram

designerbooks.com.cn

4968 ms

common.css

10303 ms

index.css

9176 ms

common.js

2428 ms

tab.js

1056 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 76% of them (68 requests) were addressed to the original Designerbooks.com.cn, 10% (9 requests) were made to Www13.53kf.com and 3% (3 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (19.7 sec) belongs to the original domain Designerbooks.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 134.2 kB (51%)

Content Size

264.9 kB

After Optimization

130.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Designerbooks.com.cn main page is 264.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. HTML takes 84.4 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 69.4 kB

  • Original 84.4 kB
  • After minification 70.5 kB
  • After compression 15.0 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. This page needs HTML code to be minified as it can gain 13.9 kB, which is 17% 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 69.4 kB or 82% of the original size.

Image Optimization

-21%

Potential reduce by 16.5 kB

  • Original 79.5 kB
  • After minification 63.0 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, Designerbooks needs image optimization as it can save up to 16.5 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-19%

Potential reduce by 10.3 kB

  • Original 54.9 kB
  • After minification 50.9 kB
  • After compression 44.6 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 10.3 kB or 19% of the original size.

CSS Optimization

-82%

Potential reduce by 38.0 kB

  • Original 46.1 kB
  • After minification 38.9 kB
  • After compression 8.2 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. Designerbooks.com.cn needs all CSS files to be minified and compressed as it can save up to 38.0 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (47%)

Requests Now

85

After Optimization

45

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 85 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Designerbooks. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

designerbooks.com.cn accessibility score

50

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 valid value for its [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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

designerbooks.com.cn 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

designerbooks.com.cn SEO score

50

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

High

Document uses plugins

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    UT

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Designerbooks.com.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed language. Our system also found out that Designerbooks.com.cn 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 Designerbooks. 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: