Tools & Wizards About Us
cd-tennis.com screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 49

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

cd-tennis.com

超达网球俱乐部 | 北京网球培训 | 上海网球培训 | 重庆网球培训 | 成都网球培训 | 南宁网球培训 | 北京网球俱乐部 | 零基础学网球找超达 | 超达网校

Page Load Speed

26.4 sec in total

First Response

1.5 sec

Resources Loaded

24.6 sec

Page Rendered

239 ms

cd-tennis.com screenshot

About Website

Visit cd-tennis.com now to see the best up-to-date Cd Tennis content and also check out these interesting facts you probably never knew about cd-tennis.com

超达网球俱乐部及超达网校专注青少年及儿童网球培训20多年，网球培训班、网球俱乐部和直营网球场馆覆盖北京、上海、重庆、成都、南宁、保定、海南等省市；零基础学网球、网球私教课、网球培训班、网球夏令营、网球特长考学留学、打网球定场地、网球团建等，找超达网球都可以搞定。

Visit cd-tennis.com

Key Findings

We analyzed Cd-tennis.com page load time and found that the first response time was 1.5 sec and then it took 24.9 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.

Performance Metrics

cd-tennis.com performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value16.8 s

0/100

25%

SI (Speed Index)

Value15.8 s

0/100

10%

TBT (Total Blocking Time)

Value110 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.075

95/100

15%

TTI (Time to Interactive)

Value14.7 s

8/100

10%

Network Requests Diagram

cd-tennis.com

1539 ms

style.css

439 ms

wpa.php

819 ms

topBk.jpg

214 ms

qq.jpg

220 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 57% of them (38 requests) were addressed to the original Cd-tennis.com, 18% (12 requests) were made to Qiao.baidu.com and 4% (3 requests) were made to Combo.b.qq.com. The less responsive or slowest element that took the longest time to load (18.2 sec) relates to the external source Tajs.qq.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 162.8 kB (15%)

Content Size

1.1 MB

After Optimization

926.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cd-tennis.com main page is 1.1 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 909.6 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 55.6 kB

  • Original 71.8 kB
  • After minification 66.4 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. 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 55.6 kB or 77% of the original size.

Image Optimization

-7%

Potential reduce by 67.7 kB

  • Original 909.6 kB
  • After minification 841.9 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. Cd Tennis images are well optimized though.

JavaScript Optimization

-10%

Potential reduce by 7.2 kB

  • Original 69.2 kB
  • After minification 69.2 kB
  • After compression 62.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-84%

Potential reduce by 32.4 kB

  • Original 38.5 kB
  • After minification 28.5 kB
  • After compression 6.2 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. Cd-tennis.com needs all CSS files to be minified and compressed as it can save up to 32.4 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (43%)

Requests Now

65

After Optimization

37

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cd Tennis. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cd-tennis.com

cd-tennis.com

1539 ms

style.css

style.css

439 ms

wpa.php

wpa.php

819 ms

topBk.jpg

topBk.jpg

214 ms

qq.jpg

qq.jpg

220 ms

sina.jpg

sina.jpg

421 ms

youKu.jpg

youKu.jpg

427 ms

logo.jpg

logo.jpg

426 ms

video_quwen.jpg

video_quwen.jpg

428 ms

jiaoXue.jpg

jiaoXue.jpg

438 ms

icon_video.jpg

icon_video.jpg

439 ms

2016126164735.jpg

2016126164735.jpg

2306 ms

icon.jpg

icon.jpg

637 ms

2015111915368.jpg

2015111915368.jpg

2966 ms

20151119153655.jpg

20151119153655.jpg

8455 ms

20151119103550.jpg

20151119103550.jpg

4239 ms

2011914172548.jpg

2011914172548.jpg

2632 ms

20161201639.jpg

20161201639.jpg

1901 ms

201612015539.jpg

201612015539.jpg

2576 ms

2013109151458.jpg

2013109151458.jpg

2773 ms

2011914201142.jpg

2011914201142.jpg

3918 ms

201191420127.jpg

201191420127.jpg

3604 ms

201612117239.jpg

201612117239.jpg

6079 ms

2016121171950.jpg

2016121171950.jpg

6593 ms

20151123163443.jpg

20151123163443.jpg

4445 ms

icon2.jpg

icon2.jpg

4204 ms

dingYue.jpg

dingYue.jpg

4651 ms

fuWuHao.jpg

fuWuHao.jpg

4569 ms

naviBack.jpg

naviBack.jpg

5005 ms

gongGaoBk.jpg

gongGaoBk.jpg

5004 ms

searchBk.jpg

searchBk.jpg

6215 ms

sdinput_bg.gif

sdinput_bg.gif

5537 ms

huiYuan.jpg

huiYuan.jpg

5518 ms

newsBack.jpg

newsBack.jpg

5745 ms

saiShi.jpg

saiShi.jpg

5746 ms

lanMuNavi.jpg

lanMuNavi.jpg

6323 ms

huoDongBack.jpg

huoDongBack.jpg

6180 ms

tuBack.jpg

tuBack.jpg

6878 ms

diNaviBack.jpg

diNaviBack.jpg

6568 ms

h.js

h.js

2679 ms

21.gif

21.gif

914 ms

b.js

b.js

1270 ms

hm.gif

hm.gif

427 ms

Panel.js

Panel.js

1828 ms

localStorage.js

localStorage.js

1842 ms

bsl.js

bsl.js

1495 ms

contains.js

contains.js

233 ms

r.cgi

r.cgi

1152 ms

r.cgi

r.cgi

1147 ms

ta.php

ta.php

557 ms

crmqq.php

crmqq.php

18201 ms

wpa_first_heart_beat.php

wpa_first_heart_beat.php

558 ms

Enter.php

Enter.php

1867 ms

main_icon_invite_mess_api.js

main_icon_invite_mess_api.js

6856 ms

main.css

main.css

931 ms

fix.css

fix.css

918 ms

version.js

version.js

1356 ms

09.jpg

09.jpg

2758 ms

m-webim-lite.css

m-webim-lite.css

6879 ms

m-webim-lite.js

m-webim-lite.js

3245 ms

Refresh.php

Refresh.php

373 ms

stat.gif

stat.gif

688 ms

01.jpg

01.jpg

3640 ms

02.png

02.png

1137 ms

icon.png

icon.png

932 ms

icon_close.png

icon_close.png

4353 ms

Refresh.php

Refresh.php

373 ms

Accessibility Review

cd-tennis.com accessibility score

49

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

cd-tennis.com best practices score

67

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

cd-tennis.com SEO score

83

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

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cd-tennis.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 Cd-tennis.com main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

cd-tennis.com

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