60.8 sec in total
16.4 sec
44 sec
323 ms
Visit shanghai.zxxk.com now to see the best up-to-date Shanghai Zxxk content for China and also check out these interesting facts you probably never knew about shanghai.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 shanghai.zxxk.comWe analyzed Shanghai.zxxk.com page load time and found that the first response time was 16.4 sec and then it took 44.3 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. Unfortunately, there were 3 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
shanghai.zxxk.com performance score
name
value
score
weighting
Value7.9 s
0/100
10%
Value18.5 s
0/100
25%
Value13.1 s
2/100
10%
Value440 ms
64/100
30%
Value2.177
0/100
15%
Value18.9 s
3/100
10%
16428 ms
2136 ms
1424 ms
3182 ms
19413 ms
Our browser made a total of 99 requests to load all elements on the main page. We found that 47% of them (47 requests) were addressed to the original Shanghai.zxxk.com, 27% (27 requests) were made to Img1.zxxk.com and 11% (11 requests) were made to Jiangsu.zxxk.com. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source Img1.zxxk.com.
Page size can be reduced by 353.8 kB (40%)
889.6 kB
535.7 kB
In fact, the total size of Shanghai.zxxk.com main page is 889.6 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. 25% of websites need less resources to load. Images take 529.8 kB which makes up the majority of the site volume.
Potential reduce by 67.6 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 67.6 kB or 81% of the original size.
Potential reduce by 73.1 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, Shanghai Zxxk needs image optimization as it can save up to 73.1 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 181.0 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 181.0 kB or 76% of the original size.
Potential reduce by 32.0 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. Shanghai.zxxk.com needs all CSS files to be minified and compressed as it can save up to 32.0 kB or 84% of the original size.
Number of requests can be reduced by 42 (45%)
93
51
The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Shanghai 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 18 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
shanghai.zxxk.com
16428 ms
Default.css
2136 ms
Class.css
1424 ms
lightwindow.css
3182 ms
prototype.js
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effects.js
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lightwindow.js
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Ajax.js
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dropdowncontent.js
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ShowLogin.aspx
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AreaName.js
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top_l.js
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top_r.js
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search.js
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Js_153.js
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header.css
3208 ms
Js_152.js
475 ms
Js_154_P.js
773 ms
Js_154_T.js
3879 ms
bottom.js
525 ms
page.js
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stat.htm
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core.php
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pic.gif
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h.js
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shanghai.zxxk.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
Image elements do not have [alt] attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
shanghai.zxxk.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
Issues were logged in the Issues panel in Chrome Devtools
shanghai.zxxk.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
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
Document uses legible font sizes
ZH
N/A
GB2312
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Shanghai.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 Shanghai.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.
shanghai.zxxk.com
Open Graph description is not detected on the main page of Shanghai 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: