Tools & Wizards About Us
atguigu.com screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

atguigu.com

尚硅谷【官网】谷粉与老学员力挺的Java培训|嵌入式培训|大数据培训|前端培训|鸿蒙培训

Page Load Speed

69.5 sec in total

First Response

7.4 sec

Resources Loaded

61.2 sec

Page Rendered

878 ms

atguigu.com screenshot

About Website

Click here to check amazing Atguigu content for China. Otherwise, check out these important facts you probably never knew about atguigu.com

尚硅谷专注IT教育培训,开设Java培训,嵌入式培训,大数据培训,HTML5+Web前端开发培训,鸿蒙开发培训等多门程序员编程培训课程,尚硅谷在北京、上海、武汉、深圳、西安、成都都设有基地,致力于培养中高级程序员,是业内口碑闻名的IT教育培训机构。

Visit atguigu.com

Key Findings

We analyzed Atguigu.com page load time and found that the first response time was 7.4 sec and then it took 62.1 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 7 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

atguigu.com performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value18.9 s

0/100

25%

SI (Speed Index)

Value12.3 s

3/100

10%

TBT (Total Blocking Time)

Value1,400 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.187

65/100

15%

TTI (Time to Interactive)

Value27.5 s

0/100

10%

Network Requests Diagram

atguigu.com

7431 ms

main.css

6937 ms

jquery-1.7.2.min.js

14989 ms

easySlider1.5.js

3073 ms

jquery.superslide.2.1.1.js

6513 ms

Our browser made a total of 101 requests to load all elements on the main page. We found that 89% of them (90 requests) were addressed to the original Atguigu.com, 2% (2 requests) were made to Www6.53kf.com and 1% (1 request) were made to S17.cnzz.com. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain Atguigu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 288.5 kB (28%)

Content Size

1.0 MB

After Optimization

748.2 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Atguigu.com main page is 1.0 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. 25% of websites need less resources to load. Images take 868.1 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 83.1 kB

  • Original 99.3 kB
  • After minification 93.2 kB
  • After compression 16.3 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 83.1 kB or 84% of the original size.

Image Optimization

-20%

Potential reduce by 174.7 kB

  • Original 868.1 kB
  • After minification 693.4 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. Obviously, Atguigu needs image optimization as it can save up to 174.7 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-44%

Potential reduce by 30.8 kB

  • Original 69.3 kB
  • After minification 64.5 kB
  • After compression 38.5 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 30.8 kB or 44% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (14%)

Requests Now

92

After Optimization

79

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Atguigu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

atguigu.com

atguigu.com

7431 ms

main.css

main.css

6937 ms

jquery-1.7.2.min.js

jquery-1.7.2.min.js

14989 ms

easySlider1.5.js

easySlider1.5.js

3073 ms

jquery.superslide.2.1.1.js

jquery.superslide.2.1.1.js

6513 ms

mainbanner.js

mainbanner.js

4107 ms

jiuye.js

jiuye.js

3971 ms

jquery.KinSlideshow-1.2.1.min.js

jquery.KinSlideshow-1.2.1.min.js

6234 ms

stat.php

stat.php

1823 ms

kf.php

kf.php

3895 ms

duilian.js

duilian.js

511 ms

nav.js

nav.js

442 ms

gotop.js

gotop.js

917 ms

sinaaddjava.jpg

sinaaddjava.jpg

14097 ms

weibo.jpg

weibo.jpg

1806 ms

logo.gif

logo.gif

2562 ms

topbanner.gif

topbanner.gif

4357 ms

nav_bg.jpg

nav_bg.jpg

2010 ms

nav_a_bg.jpg

nav_a_bg.jpg

5471 ms

banner0405.gif

banner0405.gif

3961 ms

android2016.jpg

android2016.jpg

11798 ms

javaee-upgrade.jpg

javaee-upgrade.jpg

15568 ms

webbanner.jpg

webbanner.jpg

14027 ms

banner20150925.jpg

banner20150925.jpg

12392 ms

open-class0310.jpg

open-class0310.jpg

10822 ms

bg_r.jpg

bg_r.jpg

11939 ms

list_style.png

list_style.png

12224 ms

qq2.jpg

qq2.jpg

13162 ms

qq1.jpg

qq1.jpg

13068 ms

download.jpg

download.jpg

19505 ms

bg_d.jpg

bg_d.jpg

14590 ms

zhongc.jpg

zhongc.jpg

13906 ms

hanjz.jpg

hanjz.jpg

14298 ms

hugj.jpg

hugj.jpg

14420 ms

mengll.jpg

mengll.jpg

16440 ms

yangf.jpg

yangf.jpg

14673 ms

yuql.jpg

yuql.jpg

14815 ms

zhouguanghui3.jpg

zhouguanghui3.jpg

14977 ms

liujunwei.jpg

liujunwei.jpg

17182 ms

zhangyan3.jpg

zhangyan3.jpg

15211 ms

caojian.jpg

caojian.jpg

15800 ms

liguolong.jpg

liguolong.jpg

15609 ms

zhaoyingying.jpg

zhaoyingying.jpg

18223 ms

lifeng.jpg

lifeng.jpg

17048 ms

aixinhua.jpg

aixinhua.jpg

18189 ms

tianzhiqiang.jpg

tianzhiqiang.jpg

19520 ms

luxuedong.jpg

luxuedong.jpg

18702 ms

contact.jpg

contact.jpg

19521 ms

zhang.jpg

zhang.jpg

20417 ms

stat.htm

stat.htm

186 ms

core.php

core.php

854 ms

9.gif

9.gif

1131 ms

pic.gif

pic.gif

2390 ms

sendacc.jsp

sendacc.jsp

4123 ms

kf_new.php

kf_new.php

4134 ms

rt.js

rt.js

2031 ms

topback.gif

topback.gif

4415 ms

bg_x.jpg

bg_x.jpg

17293 ms

qixin.jpg

qixin.jpg

17566 ms

app.gif

app.gif

4089 ms

android20160317.jpg

android20160317.jpg

18649 ms

html20160316.jpg

html20160316.jpg

18305 ms

java20160315.jpg

java20160315.jpg

20174 ms

kf.php

kf.php

20283 ms

java20160225.jpg

java20160225.jpg

18311 ms

zhaopin_i.jpg

zhaopin_i.jpg

18759 ms

qiuqinlun.jpg

qiuqinlun.jpg

12558 ms

zhanghaijun.jpg

zhanghaijun.jpg

12630 ms

caofan.jpg

caofan.jpg

12311 ms

student.jpg

student.jpg

16222 ms

huanju1.jpg

huanju1.jpg

15605 ms

huanju2.jpg

huanju2.jpg

14740 ms

huanju3.jpg

huanju3.jpg

13214 ms

huanju4.jpg

huanju4.jpg

13541 ms

tonggang1.jpg

tonggang1.jpg

15688 ms

lihefei1.jpg

lihefei1.jpg

15546 ms

songhongkang1.jpg

songhongkang1.jpg

19432 ms

fengjie1.jpg

fengjie1.jpg

16205 ms

new1.gif

new1.gif

14446 ms

baidu.jpg

baidu.jpg

17217 ms

sina.jpg

sina.jpg

15560 ms

jd.jpg

jd.jpg

17800 ms

alibaba.jpg

alibaba.jpg

17902 ms

lenovo.jpg

lenovo.jpg

17106 ms

zhongke.jpg

zhongke.jpg

17160 ms

360.jpg

360.jpg

17631 ms

neusoft.jpg

neusoft.jpg

19921 ms

hisoft.jpg

hisoft.jpg

16742 ms

emc.jpg

emc.jpg

16294 ms

fangzheng.jpg

fangzheng.jpg

19786 ms

renren.jpg

renren.jpg

16611 ms

zte.jpg

zte.jpg

16070 ms

huawei.jpg

huawei.jpg

16596 ms

yzw.jpg

yzw.jpg

15402 ms

sohu.jpg

sohu.jpg

16732 ms

logo1.jpg

logo1.jpg

19957 ms

phone_bottom.jpg

phone_bottom.jpg

18041 ms

jc.png

jc.png

18073 ms

beian.jpg

beian.jpg

14466 ms

weixinleft.gif

weixinleft.gif

13400 ms

yejiebg2.jpg

yejiebg2.jpg

20169 ms

Accessibility Review

atguigu.com accessibility score

60

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.

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

<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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

atguigu.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

atguigu.com SEO score

83

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 doesn't use 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 Atguigu.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 Atguigu.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

atguigu.com

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