Report Summary

  • 19

    Performance

    Renders faster than
    39% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    28% of websites

  • 62

    SEO

    Google-friendlier than
    32% of websites

cntv.cn

央视网_世界就在眼前

Page Load Speed

5.4 sec in total

First Response

2.2 sec

Resources Loaded

3.2 sec

Page Rendered

0 ms

cntv.cn screenshot

About Website

Welcome to cntv.cn homepage info - get ready to check Cntv best content for China right away, or after learning these important things about cntv.cn

央视网(www.cctv.com)由中央广播电视总台主办,是以视频为特色的中央重点新闻网站,是央视的融合传播平台,是拥有全牌照业务资质的大型互联网文化企业。秉承“融合创新、一体发展”的理念,以新闻为龙头,以视频为重点,以用户为中心,建成“一网一端多平台多渠道”融媒体传播体系。

Visit cntv.cn

Key Findings

We analyzed Cntv.cn page load time and found that the first response time was 2.2 sec and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cntv.cn performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

1/100

25%

SI (Speed Index)

Value11.5 s

5/100

10%

TBT (Total Blocking Time)

Value4,610 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value29.4 s

0/100

10%

Network Requests Diagram

cntv.cn

2174 ms

www.cntv.cn

1008 ms

Our browser made a total of 2 requests to load all elements on the main page. We found that all of those requests were addressed to Cntv.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Cntv.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (56%)

Content Size

2.6 MB

After Optimization

1.2 MB

In fact, the total size of Cntv.cn main page is 2.6 MB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Javascripts take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-19%

Potential reduce by 45 B

  • Original 242 B
  • After minification 242 B
  • After compression 197 B

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 45 B or 19% of the original size.

Image Optimization

-10%

Potential reduce by 73.6 kB

  • Original 721.7 kB
  • After minification 648.1 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. Cntv images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 964.8 kB

  • Original 1.4 MB
  • After minification 1.4 MB
  • After compression 423.8 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 964.8 kB or 69% of the original size.

CSS Optimization

-83%

Potential reduce by 405.5 kB

  • Original 488.8 kB
  • After minification 448.3 kB
  • After compression 83.3 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. Cntv.cn needs all CSS files to be minified and compressed as it can save up to 405.5 kB or 83% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Accessibility Review

cntv.cn accessibility score

65

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.

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

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

[lang] attributes do not have a valid value

Best Practices

cntv.cn best practices score

50

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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

cntv.cn SEO score

62

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cntv.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 Cntv.cn main page’s claimed encoding is . 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 Cntv. 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: