Tools & Wizards About Us
uubook.com screenshot

Report Summary

  • 73

    Performance

    Renders faster than
    83% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

uubook.com

网上购书比价网

Page Load Speed

17.4 sec in total

First Response

4.6 sec

Resources Loaded

12.7 sec

Page Rendered

97 ms

uubook.com screenshot

About Website

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

Visit uubook.com

Key Findings

We analyzed Uubook.com page load time and found that the first response time was 4.6 sec and then it took 12.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster. This domain responded with an error, which can significantly jeopardize Uubook.com rating and web reputation

Performance Metrics

uubook.com performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

60/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

77/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.447

20/100

15%

TTI (Time to Interactive)

Value2.9 s

97/100

10%

Network Requests Diagram

uubook.com

4606 ms

3541228.js

3886 ms

icon_0.gif

4228 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that 33% of them (1 request) were addressed to the original Uubook.com, 33% (1 request) were made to Js.users.51.la and 33% (1 request) were made to Icon.51.la. The less responsive or slowest element that took the longest time to load (4.6 sec) belongs to the original domain Uubook.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 25.7 kB (2%)

Content Size

1.2 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Uubook.com main page is 1.2 MB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 22.1 kB

  • Original 27.6 kB
  • After minification 27.4 kB
  • After compression 5.4 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 22.1 kB or 80% of the original size.

Image Optimization

-0%

Potential reduce by 36 B

  • Original 1.2 MB
  • After minification 1.2 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. Uubook images are well optimized though.

JavaScript Optimization

-43%

Potential reduce by 646 B

  • Original 1.5 kB
  • After minification 1.5 kB
  • After compression 873 B

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 646 B or 43% of the original size.

CSS Optimization

-74%

Potential reduce by 2.9 kB

  • Original 3.9 kB
  • After minification 3.1 kB
  • After compression 1.0 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. Uubook.com needs all CSS files to be minified and compressed as it can save up to 2.9 kB or 74% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

2

After Optimization

2

  • Images
  • JavaScript

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uubook. According to our analytics all requests are already optimized.

Network Requests Diagram

uubook.com

uubook.com

4606 ms

3541228.js

3541228.js

3886 ms

icon_0.gif

icon_0.gif

4228 ms

Accessibility Review

uubook.com accessibility score

64

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

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

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

uubook.com 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

uubook.com SEO score

92

Search Engine Optimization Advices

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Uubook.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 Uubook.com 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

uubook.com

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