Tools & Wizards About Us
51zxw.net screenshot

Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

51zxw.net

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Page Load Speed

8.8 sec in total

First Response

478 ms

Resources Loaded

7.8 sec

Page Rendered

498 ms

51zxw.net screenshot

About Website

Welcome to 51zxw.net homepage info - get ready to check 51 Zxw best content for China right away, or after learning these important things about 51zxw.net

我要自学网-免费视频教程,提供全方位软件学习，有3D教程，平面教程，多媒体制作教程，办公信息化教程，机械设计教程，网站制作教程,电脑培训

Visit 51zxw.net

Key Findings

We analyzed 51zxw.net page load time and found that the first response time was 478 ms and then it took 8.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

51zxw.net performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value7.6 s

4/100

25%

SI (Speed Index)

Value17.4 s

0/100

10%

TBT (Total Blocking Time)

Value1,160 ms

22/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value25.9 s

0/100

10%

Network Requests Diagram

51zxw.net

478 ms

www.51zxw.net

690 ms

www.51zxw.net

1278 ms

iconfont.min.css

410 ms

iconfont.css

624 ms

Our browser made a total of 111 requests to load all elements on the main page. We found that 41% of them (45 requests) were addressed to the original 51zxw.net, 29% (32 requests) were made to Image.51zxw.net and 11% (12 requests) were made to Webpage.qidian.qq.com. The less responsive or slowest element that took the longest time to load (3.6 sec) relates to the external source Pic.51zxw.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 140.0 kB (7%)

Content Size

1.9 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 51zxw.net main page is 1.9 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 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 95.7 kB

  • Original 112.6 kB
  • After minification 103.8 kB
  • After compression 16.9 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 95.7 kB or 85% of the original size.

Image Optimization

-0%

Potential reduce by 2.6 kB

  • Original 1.1 MB
  • After minification 1.1 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. 51 Zxw images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 37.5 kB

  • Original 509.3 kB
  • After minification 507.3 kB
  • After compression 471.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-3%

Potential reduce by 4.3 kB

  • Original 163.6 kB
  • After minification 163.6 kB
  • After compression 159.3 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. 51zxw.net has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 40 (38%)

Requests Now

105

After Optimization

65

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 105 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Zxw. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

51zxw.net

51zxw.net

478 ms

www.51zxw.net

www.51zxw.net

690 ms

www.51zxw.net

www.51zxw.net

1278 ms

iconfont.min.css

iconfont.min.css

410 ms

iconfont.css

iconfont.css

624 ms

H-ui.min.css

H-ui.min.css

629 ms

layui.css

layui.css

1038 ms

public.css

public.css

626 ms

index.css

index.css

837 ms

202404190434173887.jpg

202404190434173887.jpg

1846 ms

1340.jpg

1340.jpg

1367 ms

1342.jpg

1342.jpg

1513 ms

1341.jpg

1341.jpg

1250 ms

1339.jpg

1339.jpg

1481 ms

1338.jpg

1338.jpg

1304 ms

1333.jpg

1333.jpg

1542 ms

1337.jpg

1337.jpg

1701 ms

1336.jpg

1336.jpg

1555 ms

202405041142358971.jpg

202405041142358971.jpg

3614 ms

202404290246535566.jpg

202404290246535566.jpg

1777 ms

202404290244595652.jpg

202404290244595652.jpg

1805 ms

202404201159063476.jpg

202404201159063476.jpg

1584 ms

jquery-1.11.3.min.js

jquery-1.11.3.min.js

1429 ms

json2.js

json2.js

1511 ms

jquery.caret-1.5.0.min.js

jquery.caret-1.5.0.min.js

827 ms

layui.all.js

layui.all.js

1246 ms

jquery.validate.min.js

jquery.validate.min.js

1246 ms

additional-methods.js

additional-methods.js

1235 ms

messages_zh.js

messages_zh.js

1444 ms

jquery.enplaceholder.js

jquery.enplaceholder.js

1455 ms

wxLogin.js

wxLogin.js

1454 ms

QuickLogin.js

QuickLogin.js

1625 ms

PcCommon.js

PcCommon.js

1636 ms

44a7eeb8cfc53df3c170b0211f765a7d

44a7eeb8cfc53df3c170b0211f765a7d

1205 ms

71ed956fa3539e88013e014b128b1762

71ed956fa3539e88013e014b128b1762

1211 ms

jquery-ui.min.js

jquery-ui.min.js

2071 ms

jquery.SuperSlide.min.js

jquery.SuperSlide.min.js

1656 ms

1053.jpg

1053.jpg

1569 ms

1150.jpg

1150.jpg

1700 ms

931.jpg

931.jpg

1733 ms

1009.jpg

1009.jpg

1771 ms

934.jpg

934.jpg

1783 ms

class1.jpg

class1.jpg

1777 ms

class2.jpg

class2.jpg

1920 ms

class3.jpg

class3.jpg

1926 ms

class4.jpg

class4.jpg

1959 ms

class5.jpg

class5.jpg

2008 ms

class6.jpg

class6.jpg

1991 ms

class7.jpg

class7.jpg

2020 ms

class8.jpg

class8.jpg

2146 ms

class9.jpg

class9.jpg

2152 ms

class10.jpg

class10.jpg

2185 ms

class11.jpg

class11.jpg

2242 ms

pic5.jpg

pic5.jpg

2243 ms

pic6.jpg

pic6.jpg

2256 ms

pic7.jpg

pic7.jpg

2371 ms

pic8.jpg

pic8.jpg

2381 ms

pic9.jpg

pic9.jpg

2410 ms

pic10.jpg

pic10.jpg

2449 ms

pic11.jpg

pic11.jpg

2479 ms

pic12.jpg

pic12.jpg

2495 ms

202209051212366458.jpg

202209051212366458.jpg

1929 ms

202003051207155232.jpg

202003051207155232.jpg

1800 ms

202105151135519221.jpg

202105151135519221.jpg

1832 ms

201911161028095478.jpg

201911161028095478.jpg

1844 ms

qqIcon2.png

qqIcon2.png

1868 ms

phoneIcon.png

phoneIcon.png

2032 ms

qrcore_for_app.jpg

qrcore_for_app.jpg

2027 ms

qrcore_for_wx.jpg

qrcore_for_wx.jpg

2040 ms

footPic3.png

footPic3.png

2070 ms

footPic1.png

footPic1.png

3037 ms

logo.png

logo.png

1196 ms

otherFun1.jpg

otherFun1.jpg

1205 ms

otherFun2.jpg

otherFun2.jpg

1210 ms

otherFun3.jpg

otherFun3.jpg

2222 ms

otherFun4.jpg

otherFun4.jpg

1235 ms

otherFun5.jpg

otherFun5.jpg

1403 ms

redline.png

redline.png

1437 ms

iconfont.woff

iconfont.woff

1569 ms

laydate.css

laydate.css

987 ms

layer.css

layer.css

1141 ms

code.css

code.css

1178 ms

hm.js

hm.js

1061 ms

jquery.lazyload.js

jquery.lazyload.js

196 ms

pk1.js

pk1.js

528 ms

i.js

i.js

9 ms

jsonp

jsonp

1176 ms

getGrayLevel

getGrayLevel

782 ms

jsonp

jsonp

1812 ms

getGrayLevel

getGrayLevel

748 ms

trace

trace

1618 ms

trace

trace

1617 ms

trace

trace

1618 ms

hm.gif

hm.gif

337 ms

pc.html

pc.html

566 ms

index.html

index.html

1321 ms

initQidianMonitor.js

initQidianMonitor.js

8 ms

instant.js

instant.js

10 ms

qidianMonitor.umd.min.js

qidianMonitor.umd.min.js

44 ms

feedback-1.2.27.js

feedback-1.2.27.js

40 ms

trtc_4.14.4.js

trtc_4.14.4.js

141 ms

chunk-vendors.3a947e0a.css

chunk-vendors.3a947e0a.css

33 ms

pc.736f6799.css

pc.736f6799.css

41 ms

chunk-imsdk.ae0a9363.js

chunk-imsdk.ae0a9363.js

36 ms

chunk-vendors.6399c7ff.js

chunk-vendors.6399c7ff.js

164 ms

pc.9bf0685a.js

pc.9bf0685a.js

161 ms

icomoon.f4992c50.ttf

icomoon.f4992c50.ttf

8 ms

qidianMonitor.umd.min.js

qidianMonitor.umd.min.js

15 ms

jquery-1.12.4-fixed.min.js

jquery-1.12.4-fixed.min.js

0 ms

statusManager.js

statusManager.js

9 ms

amr.d8ebe3b6.js

amr.d8ebe3b6.js

33 ms

Accessibility Review

51zxw.net accessibility score

54

Accessibility Issues

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best Practices

51zxw.net best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

51zxw.net SEO score

58

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

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 51zxw.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 51zxw.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

51zxw.net

Open Graph description is not detected on the main page of 51 Zxw. 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: