Tools & Wizards About Us
zxxk.com screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

zxxk.com

学科网-海量中小学教育资源共享平台、权威教学资源门户网站！

Page Load Speed

24.7 sec in total

First Response

2 sec

Resources Loaded

22.2 sec

Page Rendered

486 ms

zxxk.com screenshot

About Website

Visit zxxk.com now to see the best up-to-date Zxxk content for China and also check out these interesting facts you probably never knew about zxxk.com

学科网是中小学优质教育资源共享平台,致力于推进信息技术与教育教学融合应用,为教师提供优质的试题、试卷、课件、教案等教学资源,内容涵盖K12领域小学、初中、高中、中职全部学科学段,服务教师教学教研,服务家校协同育人。

Visit zxxk.com

Key Findings

We analyzed Zxxk.com page load time and found that the first response time was 2 sec and then it took 22.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

zxxk.com performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value18.2 s

0/100

10%

TBT (Total Blocking Time)

Value3,560 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.054

98/100

15%

TTI (Time to Interactive)

Value16.7 s

5/100

10%

Network Requests Diagram

zxxk.com

1955 ms

www.zxxk.com

4883 ms

global.min.css

703 ms

indexV2.min.css

1598 ms

ad151202.jpg

3603 ms

Our browser made a total of 98 requests to load all elements on the main page. We found that 45% of them (44 requests) were addressed to the original Zxxk.com, 16% (16 requests) were made to Img1.zxxk.com and 13% (13 requests) were made to Mingxiao.zxxk.com. The less responsive or slowest element that took the longest time to load (16.9 sec) relates to the external source Gaokao.zxxk.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 979.7 kB (38%)

Content Size

2.6 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zxxk.com main page is 2.6 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 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 268.8 kB

  • Original 306.8 kB
  • After minification 266.7 kB
  • After compression 38.1 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 40.2 kB, which is 13% 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 268.8 kB or 88% of the original size.

Image Optimization

-7%

Potential reduce by 111.7 kB

  • Original 1.5 MB
  • After minification 1.4 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. Zxxk images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 191.1 kB

  • Original 262.1 kB
  • After minification 208.8 kB
  • After compression 71.0 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 191.1 kB or 73% of the original size.

CSS Optimization

-84%

Potential reduce by 408.3 kB

  • Original 488.6 kB
  • After minification 430.5 kB
  • After compression 80.4 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. Zxxk.com needs all CSS files to be minified and compressed as it can save up to 408.3 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (17%)

Requests Now

88

After Optimization

73

  • Images
  • JavaScript
  • CSS

The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zxxk. 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 as a result speed up the page load time.

Network Requests Diagram

zxxk.com

zxxk.com

1955 ms

www.zxxk.com

www.zxxk.com

4883 ms

global.min.css

global.min.css

703 ms

indexV2.min.css

indexV2.min.css

1598 ms

ad151202.jpg

ad151202.jpg

3603 ms

timeline.css

timeline.css

1706 ms

js160304.jpg

js160304.jpg

2927 ms

js160329.jpg

js160329.jpg

3397 ms

js160405.jpg

js160405.jpg

2628 ms

js1603252.jpg

js1603252.jpg

7168 ms

js1604052.jpg

js1604052.jpg

5110 ms

ad1604053.jpg

ad1604053.jpg

3793 ms

ad160405.jpg

ad160405.jpg

3677 ms

js20160328.jpg

js20160328.jpg

4208 ms

js160225.jpg

js160225.jpg

16852 ms

ad160323.jpg

ad160323.jpg

6070 ms

ad151210.jpg

ad151210.jpg

2926 ms

ad141208.jpg

ad141208.jpg

8543 ms

75362.jpg

75362.jpg

2217 ms

img1.zxxk.com

img1.zxxk.com

2609 ms

61057.jpg

61057.jpg

3478 ms

53837.jpg

53837.jpg

2768 ms

49176.jpg

49176.jpg

15149 ms

24005.jpg

24005.jpg

2809 ms

14208.jpg

14208.jpg

5248 ms

6623.jpg

6623.jpg

6411 ms

1149.jpg

1149.jpg

4723 ms

517.jpg

517.jpg

6268 ms

448.jpg

448.jpg

10721 ms

437.jpg

437.jpg

7794 ms

126.jpg

126.jpg

6767 ms

113.jpg

113.jpg

8081 ms

img1.zxxk.com

img1.zxxk.com

1366 ms

img1.zxxk.com

img1.zxxk.com

1378 ms

img1.zxxk.com

img1.zxxk.com

1372 ms

img1.zxxk.com

img1.zxxk.com

1510 ms

img1.zxxk.com

img1.zxxk.com

1539 ms

img1.zxxk.com

img1.zxxk.com

1789 ms

img1.zxxk.com

img1.zxxk.com

1801 ms

ad1604052.jpg

ad1604052.jpg

3651 ms

ad151209.jpg

ad151209.jpg

3512 ms

ad160218.jpg

ad160218.jpg

5277 ms

hd-logo.png

hd-logo.png

444 ms

hd-icon.png

hd-icon.png

681 ms

logo.png

logo.png

1005 ms

icons.png

icons.png

1597 ms

timeline.png

timeline.png

2512 ms

portal.png

portal.png

1609 ms

nav-icon.png

nav-icon.png

830 ms

faster-icon.png

faster-icon.png

2011 ms

groom.png

groom.png

1233 ms

list.png

list.png

1359 ms

big-bt.jpg

big-bt.jpg

1620 ms

floor.png

floor.png

1681 ms

org-arrow.png

org-arrow.png

1983 ms

bl-arrow.png

bl-arrow.png

1994 ms

or-list.png

or-list.png

2020 ms

or-list2.png

or-list2.png

2012 ms

red-arrow.png

red-arrow.png

2369 ms

cnnic.png

cnnic.png

829 ms

org-guide.png

org-guide.png

2217 ms

sinajy.gif

sinajy.gif

2171 ms

txjy.gif

txjy.gif

2178 ms

shjy.gif

shjy.gif

3998 ms

rmjy.gif

rmjy.gif

2491 ms

fhjy.jpg

fhjy.jpg

2498 ms

jyxw.gif

jyxw.gif

2584 ms

xyy.gif

xyy.gif

2601 ms

f1.gif

f1.gif

2731 ms

f2.gif

f2.gif

2843 ms

f3.gif

f3.gif

2844 ms

f4.gif

f4.gif

2971 ms

zxqq.png

zxqq.png

2985 ms

require.min.js

require.min.js

1807 ms

ZXXKCOM201604061057386284527.jpg

ZXXKCOM201604061057386284527.jpg

2834 ms

ZXXKCOM201604061058037757994.jpg

ZXXKCOM201604061058037757994.jpg

1636 ms

ZXXKCOM201604061057183254522.jpg

ZXXKCOM201604061057183254522.jpg

2992 ms

ZXXKCOM201604061058423121440.jpg

ZXXKCOM201604061058423121440.jpg

1420 ms

ZXXKCOM201604061058225870143.jpg

ZXXKCOM201604061058225870143.jpg

1427 ms

ZXXKCOM201604061059027299434.jpg

ZXXKCOM201604061059027299434.jpg

3975 ms

ZXXKCOM201604061059447876613.jpg

ZXXKCOM201604061059447876613.jpg

1508 ms

ZXXKCOM201604061056468740429.jpg

ZXXKCOM201604061056468740429.jpg

1137 ms

h.js

h.js

2305 ms

startup2.min.js

startup2.min.js

374 ms

jq.js

jq.js

5124 ms

jquery.cookie.js

jquery.cookie.js

369 ms

hm.gif

hm.gif

470 ms

AddFunction.js

AddFunction.js

431 ms

jquery.md5.js

jquery.md5.js

2311 ms

newyear2016_2.js

newyear2016_2.js

428 ms

xk.auth.js

xk.auth.js

1171 ms

commonV2.min.js

commonV2.min.js

416 ms

goSearch.js

goSearch.js

420 ms

windowStorage.min.js

windowStorage.min.js

354 ms

comm.min.js

comm.min.js

351 ms

jcarousellite.js

jcarousellite.js

416 ms

DefalutHand.utf8.js

DefalutHand.utf8.js

394 ms

xk.home.js

xk.home.js

584 ms

Accessibility Review

zxxk.com accessibility score

67

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

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

zxxk.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

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

zxxk.com SEO score

85

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

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 Zxxk.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 Zxxk.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

zxxk.com

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