Tools & Wizards About Us
thn21.com screenshot

Report Summary

  • 73

    Performance

    Renders faster than
    83% of other websites

  • 37

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

thn21.com

华语网_传播语文知识_初中语文_小学语文_教案试题_中考高考作文

Page Load Speed

41.8 sec in total

First Response

6.1 sec

Resources Loaded

35.4 sec

Page Rendered

245 ms

thn21.com screenshot

About Website

Visit thn21.com now to see the best up-to-date Thn 21 content for China and also check out these interesting facts you probably never knew about thn21.com

华语网是由24位语文老师倾力打造的语文教育站点,提供汉语基础知识,高中语文,初中语文,小学语文教案,试题,中考高考作文,中小学语文同步课程辅导.

Visit thn21.com

Key Findings

We analyzed Thn21.com page load time and found that the first response time was 6.1 sec and then it took 35.7 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 was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

thn21.com performance score

73

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

43/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.025

100/100

15%

TTI (Time to Interactive)

Value5.1 s

76/100

10%

Network Requests Diagram

thn21.com

6076 ms

www.thn21.com

6675 ms

loginjs.php

809 ms

xiao1.js

876 ms

c.js

1027 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 27% of them (8 requests) were addressed to the original Thn21.com, 17% (5 requests) were made to Pagead2.googlesyndication.com and 13% (4 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (20.5 sec) relates to the external source Pos.baidu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 193.7 kB (50%)

Content Size

384.8 kB

After Optimization

191.1 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Thn21.com main page is 384.8 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. Javascripts take 280.0 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 40.8 kB

  • Original 53.3 kB
  • After minification 53.2 kB
  • After compression 12.5 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. 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 40.8 kB or 76% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 51.5 kB
  • After minification 51.5 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. Thn 21 images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 152.9 kB

  • Original 280.0 kB
  • After minification 279.7 kB
  • After compression 127.0 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 152.9 kB or 55% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (41%)

Requests Now

27

After Optimization

16

  • AJAX
  • Images
  • JavaScript

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Thn 21. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

thn21.com

thn21.com

6076 ms

www.thn21.com

www.thn21.com

6675 ms

loginjs.php

loginjs.php

809 ms

xiao1.js

xiao1.js

876 ms

c.js

c.js

1027 ms

VDesignLogo.gif

VDesignLogo.gif

1060 ms

articlebg1.gif

articlebg1.gif

1098 ms

dr.gif

dr.gif

1099 ms

beian.png

beian.png

2687 ms

urchin.js

urchin.js

39 ms

adsbygoogle.js

adsbygoogle.js

14 ms

ca-pub-5515957133961724.js

ca-pub-5515957133961724.js

58 ms

zrt_lookup.html

zrt_lookup.html

39 ms

show_ads_impl.js

show_ads_impl.js

62 ms

ads

ads

215 ms

osd.js

osd.js

74 ms

ocom

ocom

1673 ms

__utm.gif

__utm.gif

20 ms

1383386851191783190

1383386851191783190

66 ms

abg.js

abg.js

69 ms

m_js_controller.js

m_js_controller.js

89 ms

googlelogo_color_112x36dp.png

googlelogo_color_112x36dp.png

35 ms

s

s

32 ms

x_button_blue2.png

x_button_blue2.png

34 ms

9aKOW9kHIBrJTB9ONj-e1oyTZuOGlgCE-J5p-KupNmo.js

9aKOW9kHIBrJTB9ONj-e1oyTZuOGlgCE-J5p-KupNmo.js

9 ms

ocom

ocom

20487 ms

cpro.js

cpro.js

801 ms

adx.php

adx.php

835 ms

icon_12px.png

icon_12px.png

504 ms

button_121.gif

button_121.gif

628 ms

Accessibility Review

thn21.com accessibility score

37

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

thn21.com best practices score

67

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

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

thn21.com SEO score

69

Search Engine Optimization Advices

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

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 Thn21.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 Thn21.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

thn21.com

Open Graph description is not detected on the main page of Thn 21. 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: