Report Summary

  • 73

    Performance

    Renders faster than
    83% of other websites

  • 34

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 46

    SEO

    Google-friendlier than
    18% of websites

buildingbooks.com.cn

建筑图书网

Page Load Speed

76.4 sec in total

First Response

18.8 sec

Resources Loaded

57.3 sec

Page Rendered

319 ms

buildingbooks.com.cn screenshot

About Website

Click here to check amazing Buildingbooks content. Otherwise, check out these important facts you probably never knew about buildingbooks.com.cn

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Key Findings

We analyzed Buildingbooks.com.cn page load time and found that the first response time was 18.8 sec and then it took 57.6 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

buildingbooks.com.cn performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

39/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

55/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.037

100/100

15%

TTI (Time to Interactive)

Value3.3 s

93/100

10%

Network Requests Diagram

buildingbooks.com.cn

18813 ms

floatcard

1540 ms

css.css

14229 ms

all.js

6016 ms

as.js

516 ms

Our browser made a total of 93 requests to load all elements on the main page. We found that 73% of them (68 requests) were addressed to the original Buildingbooks.com.cn, 24% (22 requests) were made to Sysimages.tq.cn and 2% (2 requests) were made to Webscreen2006.tq.cn. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain Buildingbooks.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 255.3 kB (67%)

Content Size

378.4 kB

After Optimization

123.1 kB

In fact, the total size of Buildingbooks.com.cn main page is 378.4 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. 20% of websites need less resources to load. HTML takes 164.6 kB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 150.7 kB

  • Original 164.6 kB
  • After minification 99.6 kB
  • After compression 13.8 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 65.0 kB, which is 39% 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 150.7 kB or 92% of the original size.

Image Optimization

-32%

Potential reduce by 40.8 kB

  • Original 127.5 kB
  • After minification 86.7 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, Buildingbooks needs image optimization as it can save up to 40.8 kB or 32% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-74%

Potential reduce by 58.4 kB

  • Original 79.2 kB
  • After minification 79.2 kB
  • After compression 20.9 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 58.4 kB or 74% of the original size.

CSS Optimization

-77%

Potential reduce by 5.5 kB

  • Original 7.1 kB
  • After minification 6.1 kB
  • After compression 1.6 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. Buildingbooks.com.cn needs all CSS files to be minified and compressed as it can save up to 5.5 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (21%)

Requests Now

92

After Optimization

73

The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Buildingbooks. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

buildingbooks.com.cn accessibility score

34

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

<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

High

<object> elements do not have alternate text

Best Practices

buildingbooks.com.cn best practices score

58

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

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

buildingbooks.com.cn SEO score

46

Search Engine Optimization Advices

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

    ZH

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Buildingbooks.com.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Buildingbooks.com.cn 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

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