Report Summary

  • 47

    Performance

    Renders faster than
    66% of other websites

  • 50

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

cztv.com

新蓝网 - 浙江广播电视集团新媒体 - 浙江第一视频门户

Page Load Speed

43.5 sec in total

First Response

3.4 sec

Resources Loaded

39.8 sec

Page Rendered

376 ms

cztv.com screenshot

About Website

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

浙江广播电视集团新媒体,整合浙江卫视在内的18个广播电视频道的优势资源, 打造“浙江第一视频门户”,为网民提供互联网、通信网、电视网三网融合、无缝衔接的新媒体优质服务。

Visit cztv.com

Key Findings

We analyzed Cztv.com page load time and found that the first response time was 3.4 sec and then it took 40.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

cztv.com performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value15.6 s

0/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value11.7 s

17/100

10%

Network Requests Diagram

www.cztv.com

3351 ms

style_cztv20160122.css

8400 ms

style_kz.css

8398 ms

jquery.js

9254 ms

jquery.nav.js

8399 ms

Our browser made a total of 163 requests to load all elements on the main page. We found that 1% of them (2 requests) were addressed to the original Cztv.com, 50% (82 requests) were made to Img01.cztv.com and 27% (44 requests) were made to Res.cztv.com. The less responsive or slowest element that took the longest time to load (11.5 sec) relates to the external source Img01.cztv.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 649.9 kB (21%)

Content Size

3.1 MB

After Optimization

2.5 MB

In fact, the total size of Cztv.com main page is 3.1 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 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 129.0 kB

  • Original 160.6 kB
  • After minification 151.3 kB
  • After compression 31.6 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 129.0 kB or 80% of the original size.

Image Optimization

-9%

Potential reduce by 238.9 kB

  • Original 2.5 MB
  • After minification 2.3 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. Cztv images are well optimized though.

JavaScript Optimization

-59%

Potential reduce by 221.8 kB

  • Original 376.4 kB
  • After minification 372.2 kB
  • After compression 154.6 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 221.8 kB or 59% of the original size.

CSS Optimization

-83%

Potential reduce by 60.3 kB

  • Original 72.3 kB
  • After minification 63.2 kB
  • After compression 12.1 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. Cztv.com needs all CSS files to be minified and compressed as it can save up to 60.3 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (25%)

Requests Now

162

After Optimization

121

The browser has sent 162 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cztv. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

cztv.com accessibility score

50

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

Heading elements are not in a sequentially-descending order

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

High

Links do not have a discernible name

Best Practices

cztv.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

High

Page has valid source maps

SEO Factors

cztv.com SEO score

54

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

High

Page is blocked from indexing

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 Cztv.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 Cztv.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 Cztv. 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: