Access huaxue.zxxk.com. 学科网官网

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

2/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

3/100

25%

SI (Speed Index)

Value11.8 s

5/100

10%

TBT (Total Blocking Time)

Value280 ms

81/100

30%

CLS (Cumulative Layout Shift)

Value0.048

99/100

15%

TTI (Time to Interactive)

Value15.0 s

8/100

10%

huaxue.zxxk.com

1177 ms

hx.zxxk.com

5782 ms

related.css

856 ms

css_header.css

4184 ms

css.css

5021 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Huaxue.zxxk.com, 36% (30 requests) were made to Hx.zxxk.com and 19% (16 requests) were made to Img3.zxxk.com. The less responsive or slowest element that took the longest time to load (19.5 sec) relates to the external source Zxxkstatic.xkw.com.

Content Size

889.6 kB

After Optimization

416.4 kB

In fact, the total size of Huaxue.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. 30% of websites need less resources to load. Javascripts take 413.7 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 143.2 kB

Original 168.8 kB
After minification 137.8 kB
After compression 25.5 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 31.0 kB, which is 18% 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 143.2 kB or 85% of the original size.

Image Optimization

-10%

Potential reduce by 26.1 kB

Original 249.8 kB
After minification 223.7 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. Huaxue Zxxk images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 258.2 kB

Original 413.7 kB
After minification 409.9 kB
After compression 155.5 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 258.2 kB or 62% of the original size.

CSS Optimization

-80%

Potential reduce by 45.7 kB

Original 57.4 kB
After minification 50.1 kB
After compression 11.7 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. Huaxue.zxxk.com needs all CSS files to be minified and compressed as it can save up to 45.7 kB or 80% of the original size.

Requests Now

After Optimization

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Huaxue 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 19 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Registers an unload listener

Low

Detected JavaScript libraries

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

N/A
Language Claimed

N/A
Encoding

GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Huaxue.zxxk.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Huaxue.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

huaxue.zxxk.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

学科网官网

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

huaxue.zxxk.com

hx.zxxk.com

related.css

css_header.css

css.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

huaxue.zxxk.com

hx.zxxk.com

related.css

css_header.css

css.css

wuli.css

public.css

cart.css

util.css

ZxxkSite.css

jq.js

jquery.xdk.js

xk.xdk.js

Util.min.js

siteComm.min.js

windowStorage.min.js

jquery.fn.extensions.min.js

m.js

cart.min.js

searchAutoComplete.min.js

top_bg.jpg

top_logo.jpg

img3.zxxk.com

yzm.jpg

upsoft.jpg

QQ.jpg

15gk.jpg

15zk.jpg

wzdh_ico.gif

ph.jpg

jyjg.jpg

img3.zxxk.com

img3.zxxk.com

img3.zxxk.com

img3.zxxk.com

img3.zxxk.com

img3.zxxk.com

img3.zxxk.com

ZXXKCOM201601291502015556511.jpg

ZXXKCOM201603241010381090166.jpg

ZXXKCOM201603240953398126608.jpg

top_sj.gif

dhbg.jpg