Tools & Wizards About Us
wch.cn screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 78

    SEO

    Google-friendlier than
    39% of websites

wch.cn

Nanjing Qinheng Microelectronics Co., Ltd.

Page Load Speed

26.2 sec in total

First Response

766 ms

Resources Loaded

24.9 sec

Page Rendered

491 ms

wch.cn screenshot

About Website

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

沁恒是一家基于自研专业接口IP、微处理器内核IP构建一体化芯片的集成电路设计企业。主要产品包括USB/蓝牙/以太网接口芯片和连接型/互联型/无线型MCU，产品侧重于连接、联网和控制。

Visit wch.cn

Key Findings

We analyzed Wch.cn page load time and found that the first response time was 766 ms and then it took 25.4 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

wch.cn performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value12.8 s

0/100

25%

SI (Speed Index)

Value10.5 s

7/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value0.202

61/100

15%

TTI (Time to Interactive)

Value7.2 s

50/100

10%

Network Requests Diagram

wch.cn

766 ms

www.wch.cn

1807 ms

vue.js

612 ms

axios.min.js

780 ms

common.min.js

1198 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 70% of them (23 requests) were addressed to the original Wch.cn, 21% (7 requests) were made to Img.wch.cn and 6% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (20 sec) belongs to the original domain Wch.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 462.4 kB (12%)

Content Size

3.9 MB

After Optimization

3.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Wch.cn main page is 3.9 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. 30% of websites need less resources to load. Images take 3.3 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 67.2 kB

  • Original 79.3 kB
  • After minification 66.3 kB
  • After compression 12.1 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 13.0 kB, which is 16% 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 67.2 kB or 85% of the original size.

Image Optimization

-10%

Potential reduce by 329.1 kB

  • Original 3.3 MB
  • After minification 3.0 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. Wch images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 57.9 kB

  • Original 399.2 kB
  • After minification 399.2 kB
  • After compression 341.3 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 57.9 kB or 15% of the original size.

CSS Optimization

-22%

Potential reduce by 8.1 kB

  • Original 37.5 kB
  • After minification 37.5 kB
  • After compression 29.4 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. Wch.cn needs all CSS files to be minified and compressed as it can save up to 8.1 kB or 22% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (21%)

Requests Now

29

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wch. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

wch.cn

wch.cn

766 ms

www.wch.cn

www.wch.cn

1807 ms

vue.js

vue.js

612 ms

axios.min.js

axios.min.js

780 ms

common.min.js

common.min.js

1198 ms

index.css

index.css

20030 ms

index.js

index.js

1696 ms

swiper.min.css

swiper.min.css

663 ms

swiper.min.js

swiper.min.js

814 ms

app.min.css

app.min.css

1306 ms

app.min.js

app.min.js

975 ms

hm.js

hm.js

1035 ms

6806b3a2-6761-404b-9e2b-c12c3af0b8ef.png

6806b3a2-6761-404b-9e2b-c12c3af0b8ef.png

2218 ms

a8bbce48-cc3f-4125-9622-e3d03a220ad0.png

a8bbce48-cc3f-4125-9622-e3d03a220ad0.png

1070 ms

72bd837f-73a5-47ca-a0a3-890e594f5846.png

72bd837f-73a5-47ca-a0a3-890e594f5846.png

1109 ms

bb6eaf4f-583b-4c80-b3a3-e8bad6f70c65.png

bb6eaf4f-583b-4c80-b3a3-e8bad6f70c65.png

1166 ms

1a1ba5d2-387e-411b-b079-cc149623070f.png

1a1ba5d2-387e-411b-b079-cc149623070f.png

1199 ms

user.png

user.png

192 ms

language.png

language.png

663 ms

logo.png

logo.png

215 ms

search.png

search.png

205 ms

search_gray.png

search_gray.png

394 ms

close.png

close.png

386 ms

menu.png

menu.png

402 ms

xVraU7DfE8boKTjzBw026PnJFdCnQCO4X4OKGB4Y.png

xVraU7DfE8boKTjzBw026PnJFdCnQCO4X4OKGB4Y.png

881 ms

HxhnTbpO76nsHamTwc4SVYm4d3m8hw7bL7nzTWmL.png

HxhnTbpO76nsHamTwc4SVYm4d3m8hw7bL7nzTWmL.png

1219 ms

gxFXdiI4Wvg6uRfwzd0F05OPQuHeoJmXrZZZRJoV.png

gxFXdiI4Wvg6uRfwzd0F05OPQuHeoJmXrZZZRJoV.png

1394 ms

F9qP8VjGkfITK7cPGX0875z5tBmte7NMfzz1uiko.jpeg

F9qP8VjGkfITK7cPGX0875z5tBmte7NMfzz1uiko.jpeg

1413 ms

571eb1fe-857a-4d46-b59f-fdda48679641.png

571eb1fe-857a-4d46-b59f-fdda48679641.png

1161 ms

aab6f018-23dd-4239-811b-8f9172b80051.png

aab6f018-23dd-4239-811b-8f9172b80051.png

1165 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

908 ms

sidebar

sidebar

1454 ms

hm.gif

hm.gif

330 ms

Accessibility Review

wch.cn accessibility score

74

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

wch.cn best practices score

75

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

High

Missing source maps for large first-party JavaScript

SEO Factors

wch.cn SEO score

78

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

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Wch.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Wch.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

wch.cn

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