Tools & Wizards About Us

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

youlu.net

有路网 - 买旧书 上有路

Page Load Speed

34.7 sec in total

First Response

612 ms

Resources Loaded

33.4 sec

Page Rendered

678 ms

About Website

Click here to check amazing Youlu content for China. Otherwise, check out these important facts you probably never knew about youlu.net

买卖旧书 就上有路，有路网-让闲置图书重回价值，一个买书省钱卖书赚钱的专业二手图书交易网站，是国内专业的二手书旧书在线销售网站，提供大量优质低廉的正版旧书、二手书、旧教材，图书种类多、库存大、保证正版 24小时发货 七天无理由退换

Visit youlu.net

Key Findings

We analyzed Youlu.net page load time and found that the first response time was 612 ms and then it took 34.1 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. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

youlu.net performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.9 s

1/100

10%

LCP (Largest Contentful Paint)

Value29.2 s

0/100

25%

SI (Speed Index)

Value10.7 s

7/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.048

99/100

15%

TTI (Time to Interactive)

Value6.9 s

54/100

10%

Network Requests Diagram

youlu.net

612 ms

www.youlu.net

549 ms

www.youlu.net

2408 ms

103052.js

1104 ms

jquery-1.8.3.min.js

933 ms

Our browser made a total of 269 requests to load all elements on the main page. We found that 15% of them (41 requests) were addressed to the original Youlu.net, 65% (174 requests) were made to Img7.youlu.net and 5% (13 requests) were made to Img1.youlu.net. The less responsive or slowest element that took the longest time to load (19.7 sec) relates to the external source Prom.b.qq.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 180.5 kB (1%)

Content Size

13.3 MB

After Optimization

13.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Youlu.net main page is 13.3 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. 65% of websites need less resources to load. Images take 13.0 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 150.5 kB

  • Original 185.7 kB
  • After minification 181.1 kB
  • After compression 35.3 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. 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 150.5 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 8.2 kB

  • Original 13.0 MB
  • After minification 13.0 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. Youlu images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 19.6 kB

  • Original 139.3 kB
  • After minification 139.3 kB
  • After compression 119.8 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 19.6 kB or 14% of the original size.

CSS Optimization

-24%

Potential reduce by 2.3 kB

  • Original 9.5 kB
  • After minification 9.5 kB
  • After compression 7.2 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. Youlu.net needs all CSS files to be minified and compressed as it can save up to 2.3 kB or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (15%)

Requests Now

248

After Optimization

211

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 248 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Youlu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

youlu.net accessibility score

55

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

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

youlu.net best practices score

67

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

Low

Detected JavaScript libraries

SEO Factors

youlu.net SEO score

81

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

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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Youlu.net 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 Youlu.net 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 Youlu. 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: