Tools & Wizards About Us

Report Summary

  • 62

    Performance

    Renders faster than
    76% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

tingkew.com

听课网-最丰富的优质课教学视频,最大的在线听课网站!

Page Load Speed

7.1 sec in total

First Response

801 ms

Resources Loaded

6 sec

Page Rendered

308 ms

About Website

Welcome to tingkew.com homepage info - get ready to check Tingkew best content for China right away, or after learning these important things about tingkew.com

听课网（tingkew.com）是国内最大的教学视频听课网站，提供中小学各学科优质课、公开课、示范课教学视频、说课视频及配套教案课件。

Visit tingkew.com

Key Findings

We analyzed Tingkew.com page load time and found that the first response time was 801 ms and then it took 6.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

tingkew.com performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value15.7 s

0/100

25%

SI (Speed Index)

Value7.4 s

27/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.039

99/100

15%

TTI (Time to Interactive)

Value3.3 s

94/100

10%

Network Requests Diagram

tingkew.com

801 ms

style2023.09.css

250 ms

indexmenu.css

479 ms

jquery-1.8.3.min.js

722 ms

css.css

483 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 52% of them (33 requests) were addressed to the original Tingkew.com, 22% (14 requests) were made to E3f49eaa46b57.cdn.sohucs.com and 16% (10 requests) were made to M.ykimg.com. The less responsive or slowest element that took the longest time to load (4.5 sec) belongs to the original domain Tingkew.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 340.0 kB (17%)

Content Size

2.0 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tingkew.com main page is 2.0 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. 40% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 89.4 kB

  • Original 101.9 kB
  • After minification 91.5 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 89.4 kB or 88% of the original size.

Image Optimization

-12%

Potential reduce by 207.9 kB

  • Original 1.8 MB
  • After minification 1.6 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, Tingkew needs image optimization as it can save up to 207.9 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-11%

Potential reduce by 4.4 kB

  • Original 40.0 kB
  • After minification 40.0 kB
  • After compression 35.7 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 4.4 kB or 11% of the original size.

CSS Optimization

-81%

Potential reduce by 38.3 kB

  • Original 47.5 kB
  • After minification 40.6 kB
  • After compression 9.2 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. Tingkew.com needs all CSS files to be minified and compressed as it can save up to 38.3 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (26%)

Requests Now

61

After Optimization

45

  • Images
  • JavaScript
  • CSS

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tingkew. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

tingkew.com accessibility score

56

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

Form elements do not have associated labels

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

tingkew.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

Low

Detected JavaScript libraries

SEO Factors

tingkew.com SEO score

67

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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tingkew.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 Tingkew.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

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