Tools & Wizards About Us
tvchain.cn screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

tvchain.cn

10 years manufacturing roller chain, sprockets, couplings, pulleys | TV chain – China chain Manufacturer

Page Load Speed

11 sec in total

First Response

1.7 sec

Resources Loaded

9.1 sec

Page Rendered

116 ms

tvchain.cn screenshot

About Website

Visit tvchain.cn now to see the best up-to-date TV Chain content and also check out these interesting facts you probably never knew about tvchain.cn

TV chain is one of the largest professional manufacturer of industrial chains and sprockets manufacturers in China. info@tvchain.cn / +86-571-88755612.

Visit tvchain.cn

Key Findings

We analyzed Tvchain.cn page load time and found that the first response time was 1.7 sec and then it took 9.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

tvchain.cn performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value6.6 s

38/100

10%

TBT (Total Blocking Time)

Value300 ms

78/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

tvchain.cn

1725 ms

base.css

399 ms

jquery-1.7.1.min.js

2391 ms

h_top.jpg

3878 ms

ch.jpg

249 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 73% of them (19 requests) were addressed to the original Tvchain.cn, 12% (3 requests) were made to Hm.baidu.com and 8% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (5.8 sec) belongs to the original domain Tvchain.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 35.1 kB (6%)

Content Size

608.6 kB

After Optimization

573.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tvchain.cn main page is 608.6 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. 15% of websites need less resources to load. Images take 526.0 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 12.1 kB

  • Original 16.4 kB
  • After minification 11.3 kB
  • After compression 4.4 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 5.1 kB, which is 31% 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 12.1 kB or 73% of the original size.

Image Optimization

-3%

Potential reduce by 13.4 kB

  • Original 526.0 kB
  • After minification 512.6 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. TV Chain images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 8.8 kB

  • Original 63.1 kB
  • After minification 63.1 kB
  • After compression 54.3 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 8.8 kB or 14% of the original size.

CSS Optimization

-26%

Potential reduce by 801 B

  • Original 3.1 kB
  • After minification 3.1 kB
  • After compression 2.3 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. Tvchain.cn needs all CSS files to be minified and compressed as it can save up to 801 B or 26% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (13%)

Requests Now

24

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TV Chain. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

tvchain.cn

tvchain.cn

1725 ms

base.css

base.css

399 ms

jquery-1.7.1.min.js

jquery-1.7.1.min.js

2391 ms

h_top.jpg

h_top.jpg

3878 ms

ch.jpg

ch.jpg

249 ms

pu.jpg

pu.jpg

244 ms

en.jpg

en.jpg

395 ms

banbg.gif

banbg.gif

401 ms

big20130717033436.jpg

big20130717033436.jpg

3152 ms

big20130717034129.jpg

big20130717034129.jpg

2295 ms

big20130717033637.jpg

big20130717033637.jpg

1053 ms

big20140331051252.jpg

big20140331051252.jpg

5769 ms

h_bottom.jpg

h_bottom.jpg

1685 ms

nav01.gif

nav01.gif

1255 ms

nav02.gif

nav02.gif

1458 ms

nav03.gif

nav03.gif

1659 ms

nav04.gif

nav04.gif

1861 ms

nav05.gif

nav05.gif

1886 ms

erweima.gif

erweima.gif

2570 ms

analytics.js

analytics.js

6 ms

h.js

h.js

438 ms

collect

collect

33 ms

js

js

72 ms

h.js

h.js

1156 ms

21.gif

21.gif

1694 ms

hm.gif

hm.gif

307 ms

Accessibility Review

tvchain.cn accessibility score

66

Accessibility Issues

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

Links do not have a discernible name

Best Practices

tvchain.cn best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

tvchain.cn 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

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tvchain.cn can be misinterpreted by Google and other search engines. Our service has detected that English 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 Tvchain.cn 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

tvchain.cn

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