Tools & Wizards About Us
youlu.net screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% 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

  • 82

    SEO

    Google-friendlier than
    44% of websites

youlu.net

有路网 - 买旧书 上有路

Page Load Speed

36.1 sec in total

First Response

1.2 sec

Resources Loaded

34.4 sec

Page Rendered

513 ms

youlu.net screenshot

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 1.2 sec and then it took 34.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 3 request timeouts, 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

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value22.5 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value5,310 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.048

99/100

15%

TTI (Time to Interactive)

Value9.8 s

28/100

10%

Network Requests Diagram

youlu.net

1220 ms

www.youlu.net

2843 ms

StyleSheetHomePage2.css

1867 ms

StyleSheet.css

743 ms

StyleSheetAd.css

1939 ms

Our browser made a total of 152 requests to load all elements on the main page. We found that 40% of them (61 requests) were addressed to the original Youlu.net, 38% (57 requests) were made to Img3.youlu.net and 7% (10 requests) were made to Img1.youlu.net. The less responsive or slowest element that took the longest time to load (20.5 sec) relates to the external source Static.b.qq.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 521.9 kB (36%)

Content Size

1.4 MB

After Optimization

925.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Youlu.net main page is 1.4 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. 40% of websites need less resources to load. Images take 884.3 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 65.1 kB

  • Original 81.3 kB
  • After minification 72.2 kB
  • After compression 16.2 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 9.2 kB, which is 11% 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 65.1 kB or 80% of the original size.

Image Optimization

-7%

Potential reduce by 57.6 kB

  • Original 884.3 kB
  • After minification 826.7 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. Youlu images are well optimized though.

JavaScript Optimization

-82%

Potential reduce by 326.7 kB

  • Original 396.7 kB
  • After minification 223.8 kB
  • After compression 70.0 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 326.7 kB or 82% of the original size.

CSS Optimization

-85%

Potential reduce by 72.5 kB

  • Original 85.0 kB
  • After minification 58.1 kB
  • After compression 12.5 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 72.5 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 63 (43%)

Requests Now

147

After Optimization

84

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 147 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 from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

youlu.net

youlu.net

1220 ms

www.youlu.net

www.youlu.net

2843 ms

StyleSheetHomePage2.css

StyleSheetHomePage2.css

1867 ms

StyleSheet.css

StyleSheet.css

743 ms

StyleSheetAd.css

StyleSheetAd.css

1939 ms

StyleSheetGG.css

StyleSheetGG.css

1917 ms

StyleSheetShopList.css

StyleSheetShopList.css

1985 ms

StyleSheetWUCBookList.css

StyleSheetWUCBookList.css

2233 ms

StyleSheetWUCBottom.css

StyleSheetWUCBottom.css

2286 ms

StyleSheetWUCRecentView.css

StyleSheetWUCRecentView.css

2332 ms

StyleSheetWucSalesTop.css

StyleSheetWucSalesTop.css

2383 ms

StyleSheetWUCTop.css

StyleSheetWUCTop.css

2600 ms

StyleSheetWUCTop2.css

StyleSheetWUCTop2.css

3706 ms

StyleSheetWUCViewTop.css

StyleSheetWUCViewTop.css

2719 ms

StyleSheetWUCTop2.css

StyleSheetWUCTop2.css

3546 ms

jquery-1.8.3.min.js

jquery-1.8.3.min.js

4887 ms

getShoppingCartBookCount.js

getShoppingCartBookCount.js

3470 ms

search3.js

search3.js

3388 ms

pca.js

pca.js

19872 ms

jump.js

jump.js

3520 ms

homePageConsignSearch.js

homePageConsignSearch.js

2918 ms

aq_auth.js

aq_auth.js

2514 ms

wpa.js

wpa.js

9995 ms

loadtrace.php

loadtrace.php

2514 ms

1748308.js

1748308.js

1161 ms

unionDataInsert.js

unionDataInsert.js

2572 ms

outAdDataInsert.js

outAdDataInsert.js

2654 ms

wpa.js

wpa.js

20454 ms

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8108 ms

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3077 ms

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2928 ms

ico_phone.gif

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841 ms

android_qr.jpg

android_qr.jpg

3281 ms

logo.gif

logo.gif

5544 ms

title.gif

title.gif

2089 ms

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1569 ms

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3111 ms

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2944 ms

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3341 ms

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5947 ms

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5422 ms

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5774 ms

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7492 ms

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4921 ms

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5200 ms

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5746 ms

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5604 ms

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5774 ms

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6010 ms

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6634 ms

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7785 ms

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6159 ms

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7731 ms

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6405 ms

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7163 ms

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6799 ms

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7881 ms

20120410220845845.gif

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2199 ms

20151020170711711.jpg

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4422 ms

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12613 ms

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20320 ms

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6989 ms

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4782 ms

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7654 ms

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8554 ms

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12135 ms

T1uUG.XjtkXXcb2gzo-77-19.gif

T1uUG.XjtkXXcb2gzo-77-19.gif

264 ms

tb.jpg

tb.jpg

4631 ms

arrow.png

arrow.png

3329 ms

menu_hot.gif

menu_hot.gif

3538 ms

top_menu_bg_homepage_active.gif

top_menu_bg_homepage_active.gif

3726 ms

top_menu_bg_homepage.gif

top_menu_bg_homepage.gif

3910 ms

top_shoppingCart.gif

top_shoppingCart.gif

4118 ms

shoppingCartBookCount.aspx

shoppingCartBookCount.aspx

4297 ms

ShoppingCartShpBookCount.aspx

ShoppingCartShpBookCount.aspx

4506 ms

top_search_bg_all.gif

top_search_bg_all.gif

4693 ms

btnSearchButton.gif

btnSearchButton.gif

5455 ms

top_menu2_bg.gif

top_menu2_bg.gif

4879 ms

ht2Left_bg.gif

ht2Left_bg.gif

7050 ms

ht2Right_bg.gif

ht2Right_bg.gif

5076 ms

liNone.gif

liNone.gif

5272 ms

menu_head_bg.gif

menu_head_bg.gif

5448 ms

menu_body_bg.gif

menu_body_bg.gif

5672 ms

menu_body_title_bg.gif

menu_body_title_bg.gif

5690 ms

menu_bottom_bg.gif

menu_bottom_bg.gif

5818 ms

hpList3_bg.gif

hpList3_bg.gif

6577 ms

list_3_head_bg.gif

list_3_head_bg.gif

6079 ms

consign_bg.gif

consign_bg.gif

6078 ms

noPhoto.jpg

noPhoto.jpg

5274 ms

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5153 ms

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5627 ms

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5050 ms

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4949 ms

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7187 ms

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5978 ms

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5043 ms

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5424 ms

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4813 ms

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5091 ms

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5487 ms

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4381 ms

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7609 ms

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5922 ms

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5055 ms

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5370 ms

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6834 ms

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5853 ms

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6598 ms

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7331 ms

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5145 ms

list_1_head_bg.gif

list_1_head_bg.gif

401 ms

list1_hot_head_bg.gif

list1_hot_head_bg.gif

383 ms

bottom2.gif

bottom2.gif

392 ms

bottom.gif

bottom.gif

390 ms

WUCBottomLine.gif

WUCBottomLine.gif

386 ms

wpa.css

wpa.css

658 ms

r.cgi

r.cgi

783 ms

crmqq.php

crmqq.php

4467 ms

wpa_first_heart_beat.php

wpa_first_heart_beat.php

644 ms

get_version.php

get_version.php

615 ms

loadtrace_logo1.gif

loadtrace_logo1.gif

1894 ms

icon_0.gif

icon_0.gif

831 ms

h.js

h.js

1872 ms

h.js

h.js

4184 ms

r.cgi

r.cgi

1484 ms

wpa_a01.png

wpa_a01.png

328 ms

hm.gif

hm.gif

1842 ms

21.gif

21.gif

1728 ms

759 ms

hm.gif

hm.gif

342 ms

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3927 ms

10k.jpg

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1873 ms

hm.gif

hm.gif

332 ms

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332 ms

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

82

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

youlu.net

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: