Report Summary

  • 79

    Performance

    Renders faster than
    86% of other websites

  • 45

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 62

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 72

    SEO

    Google-friendlier than
    31% of websites

cs.xidian.edu.cn

西安电子科技大学计算机科学与技术学院

Page Load Speed

56.7 sec in total

First Response

15.1 sec

Resources Loaded

41.3 sec

Page Rendered

313 ms

cs.xidian.edu.cn screenshot

About Website

Welcome to cs.xidian.edu.cn homepage info - get ready to check Cs Xidian best content for China right away, or after learning these important things about cs.xidian.edu.cn

西安电子科技大学计算机专业创建于1958年,是全国最早设立计算机专业的学校。经过半个世纪的建设,计算机学院在教学、科研方面均取得了显著成绩。我院现建设有计算机科学与技术博士后科研流动站和计算机科学与技术博士学位授予权一级学科,拥有计算机系统结构、计算机应用技术和计算机软件与理论三个博士学位授权点,拥有计算机系统结构、计算机应用技术、计算机软件与理论和教育技术学四个硕士学位授权点。计算机系统结构、计...

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Key Findings

We analyzed Cs.xidian.edu.cn page load time and found that the first response time was 15.1 sec and then it took 41.6 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.

Performance Metrics

cs.xidian.edu.cn performance score

79

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

72/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

57/100

25%

SI (Speed Index)

Value7.0 s

33/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.032

100/100

15%

TTI (Time to Interactive)

Value3.3 s

94/100

10%

Network Requests Diagram

cs.xidian.edu.cn

15106 ms

dedecms.css

8674 ms

j.js

12941 ms

stat.php

1612 ms

layout.css

1899 ms

Our browser made a total of 17 requests to load all elements on the main page. We found that 71% of them (12 requests) were addressed to the original Cs.xidian.edu.cn, 6% (1 request) were made to S9.cnzz.com and 6% (1 request) were made to Oz.cnzz.com. The less responsive or slowest element that took the longest time to load (19.7 sec) belongs to the original domain Cs.xidian.edu.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 95.3 kB (67%)

Content Size

141.7 kB

After Optimization

46.3 kB

In fact, the total size of Cs.xidian.edu.cn main page is 141.7 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Javascripts take 41.7 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 27.7 kB

  • Original 37.0 kB
  • After minification 35.2 kB
  • After compression 9.2 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 27.7 kB or 75% of the original size.

Image Optimization

-52%

Potential reduce by 12.1 kB

  • Original 23.3 kB
  • After minification 11.1 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, Cs Xidian needs image optimization as it can save up to 12.1 kB or 52% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-54%

Potential reduce by 22.4 kB

  • Original 41.7 kB
  • After minification 41.5 kB
  • After compression 19.3 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 22.4 kB or 54% of the original size.

CSS Optimization

-83%

Potential reduce by 33.0 kB

  • Original 39.7 kB
  • After minification 30.6 kB
  • After compression 6.7 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. Cs.xidian.edu.cn needs all CSS files to be minified and compressed as it can save up to 33.0 kB or 83% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

12

After Optimization

12

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cs Xidian. According to our analytics all requests are already optimized.

Accessibility Review

cs.xidian.edu.cn accessibility score

45

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

cs.xidian.edu.cn best practices score

62

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

High

Registers an unload listener

High

Browser errors were logged to the console

SEO Factors

cs.xidian.edu.cn SEO score

72

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 Cs.xidian.edu.cn 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 Cs.xidian.edu.cn 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

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