Tools & Wizards About Us
17zuoye.com screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 49

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

17zuoye.com

一起教育科技_让学习成为美好体验

Page Load Speed

12.4 sec in total

First Response

3.2 sec

Resources Loaded

8.8 sec

Page Rendered

510 ms

17zuoye.com screenshot

About Website

Welcome to 17zuoye.com homepage info - get ready to check 17 Zuoye best content for China right away, or after learning these important things about 17zuoye.com

一起作业是一款免费学习工具，是一个学生、老师和家长三方互动的作业平台，老师轻松布置作业，学生快乐做作业，家长可以定期查看孩子的学习进度及报告，情景交融的学习模式，让孩子轻松搞定各科学习！一起作业，让学习成为美好体验。

Visit 17zuoye.com

Key Findings

We analyzed 17zuoye.com page load time and found that the first response time was 3.2 sec and then it took 9.3 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

17zuoye.com performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.1 s

76/100

10%

Network Requests Diagram

login.vpage

3177 ms

jquery-1.7.1.min-V20160108163135.js

5409 ms

jquery-utils-V20160108163135.js

5386 ms

$17.min-V20160128142321.js

5387 ms

jquery-impromptu-V20160108163135.css

5386 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original 17zuoye.com, 3% (1 request) were made to Ucenter.17zuoye.com and 3% (1 request) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (5.4 sec) relates to the external source Cdn-cnc.17zuoye.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 128.3 kB (23%)

Content Size

546.3 kB

After Optimization

418.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 17zuoye.com main page is 546.3 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. 35% of websites need less resources to load. Images take 375.8 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 99.7 kB

  • Original 123.9 kB
  • After minification 117.9 kB
  • After compression 24.2 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. 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 99.7 kB or 80% of the original size.

Image Optimization

-1%

Potential reduce by 5.3 kB

  • Original 375.8 kB
  • After minification 370.4 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. 17 Zuoye images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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

-79%

Potential reduce by 23.2 kB

  • Original 29.5 kB
  • After minification 28.8 kB
  • After compression 6.3 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. 17zuoye.com needs all CSS files to be minified and compressed as it can save up to 23.2 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (14%)

Requests Now

35

After Optimization

30

  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 17 Zuoye. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

login.vpage

login.vpage

3177 ms

jquery-1.7.1.min-V20160108163135.js

jquery-1.7.1.min-V20160108163135.js

5409 ms

jquery-utils-V20160108163135.js

jquery-utils-V20160108163135.js

5386 ms

$17.min-V20160128142321.js

$17.min-V20160128142321.js

5387 ms

jquery-impromptu-V20160108163135.css

jquery-impromptu-V20160108163135.css

5386 ms

indexv4.min-V20160228221854.css

indexv4.min-V20160228221854.css

5389 ms

template.min-V20160111215338.js

template.min-V20160111215338.js

5390 ms

jquery-impromptu.min-V20160111215338.js

jquery-impromptu.min-V20160111215338.js

5429 ms

main-xc.jpg

main-xc.jpg

133 ms

logo.png

logo.png

39 ms

ap-back.png

ap-back.png

44 ms

img-01.png

img-01.png

45 ms

aprv-01.png

aprv-01.png

45 ms

aprv-02.png

aprv-02.png

43 ms

aprv-03.png

aprv-03.png

90 ms

aprv-04.png

aprv-04.png

93 ms

aprv-05.png

aprv-05.png

90 ms

l-icon-back.png

l-icon-back.png

78 ms

check-back.png

check-back.png

78 ms

student-guide.gif

student-guide.gif

67 ms

ap-back.png

ap-back.png

69 ms

sdx.gif

sdx.gif

58 ms

home-logo-gray.png

home-logo-gray.png

59 ms

home-module-bg1.png

home-module-bg1.png

78 ms

home-module-icon1.png

home-module-icon1.png

80 ms

home-module-bg2.png

home-module-bg2.png

109 ms

home-module-icon2.png

home-module-icon2.png

87 ms

home-module-bg3.png

home-module-bg3.png

90 ms

home-module-icon3.png

home-module-icon3.png

107 ms

home-module-icon4.png

home-module-icon4.png

110 ms

home-module-bg4.png

home-module-bg4.png

116 ms

home-module-icon5.png

home-module-icon5.png

152 ms

m-icon-share.png

m-icon-share.png

120 ms

m-footer-icon-blue.png

m-footer-icon-blue.png

135 ms

back.png

back.png

135 ms

ga.js

ga.js

28 ms

Accessibility Review

17zuoye.com accessibility score

49

Accessibility Issues

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

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

17zuoye.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

17zuoye.com SEO score

92

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

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 17zuoye.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 17zuoye.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

17zuoye.com

Open Graph description is not detected on the main page of 17 Zuoye. 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: