Access chinaopenschool.com. e-learning平台系统专家-新为软件-在线学习系统,考试系统,移动学习平台,企业网络学院,elearning权威机构

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value10.4 s

8/100

10%

TBT (Total Blocking Time)

Value660 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value9.1 s

33/100

10%

chinaopenschool.com

1162 ms

global.css

428 ms

lib.css

871 ms

style.css

874 ms

jquery-1.7.2.min.js

1319 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 93% of them (65 requests) were addressed to the original Chinaopenschool.com, 3% (2 requests) were made to Hm.baidu.com and 1% (1 request) were made to Ip.ws.126.net. The less responsive or slowest element that took the longest time to load (3.7 sec) belongs to the original domain Chinaopenschool.com.

Content Size

2.5 MB

After Optimization

2.2 MB

In fact, the total size of Chinaopenschool.com main page is 2.5 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. 55% of websites need less resources to load. Images take 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 31.5 kB

Original 39.3 kB
After minification 30.9 kB
After compression 7.8 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 8.4 kB, which is 21% 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 31.5 kB or 80% of the original size.

Image Optimization

-11%

Potential reduce by 270.4 kB

Original 2.4 MB
After minification 2.1 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. Obviously, Chinaopenschool needs image optimization as it can save up to 270.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-31%

Potential reduce by 30.3 kB

Original 98.2 kB
After minification 98.0 kB
After compression 67.9 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 30.3 kB or 31% of the original size.

CSS Optimization

-36%

Potential reduce by 9.2 kB

Original 25.4 kB
After minification 25.4 kB
After compression 16.2 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. Chinaopenschool.com needs all CSS files to be minified and compressed as it can save up to 9.2 kB or 36% of the original size.

Requests Now

After Optimization

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chinaopenschool. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 4 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 interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

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

Language and Encoding

Language Detected

ZH
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chinaopenschool.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 Chinaopenschool.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

chinaopenschool.com

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

e-learning平台系统专家-新为软件-在线学习系统,考试系统,移动学习平台,企业网络学院,elearning权威机构

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

chinaopenschool.com

global.css

lib.css

style.css

jquery-1.7.2.min.js

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

chinaopenschool.com

global.css

lib.css

style.css

jquery-1.7.2.min.js

web_boom.js

iepngfix_tilebg.js

jquery.SuperSlide.2.1.1.source.js

global.js

checkform.js

cn.js

swf_obj.js

date.js

city.js

ed8c864b86.jpg

fy_style.css

ipquery

float_img2.png

float_img3.png

float_img4.png

floty_title.png

verification_code.php

indexoa_img1.jpg

indexoa_img2.jpg

indextb_qiu.png

bo_lang.png

indext_img.jpg

b3c89bd97f.jpg

cdd61b97f3.jpg

905bd6cfc8.jpg

fl.js

9a097888d0.jpg

a4307b703f.jpg

d400a45506.jpg

indfnr_img.jpg

e135122a1e.jpg

8270588191.jpg

a5878c3d5a.jpg

84c65a3c39.jpg

fotr_li_img1.png

fotr_li_img2.png

3c8b066ba2.jpg

hea_tel_img.jpg