Report Summary

  • 85

    Performance

    Renders faster than
    89% of other websites

  • 57

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

vihome.com.cn

LabVIEW论坛_虚拟仪器_LabVIEW毕业设计_数据采集卡_TestStand_图形化编程 - Powered by Discuz!

Page Load Speed

34.9 sec in total

First Response

6.7 sec

Resources Loaded

27.9 sec

Page Rendered

337 ms

vihome.com.cn screenshot

About Website

Click here to check amazing Vihome content for China. Otherwise, check out these important facts you probably never knew about vihome.com.cn

LabVIEW论坛(www.vihome.com.cn):测量与测试社区,最专业的LabVIEW交流平台!提供虚拟仪器,LabVIEW毕业设计,CVI,数据采集卡,TestStand,图形化编程等相关信息。

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Key Findings

We analyzed Vihome.com.cn page load time and found that the first response time was 6.7 sec and then it took 28.2 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

vihome.com.cn performance score

85

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

55/100

10%

LCP (Largest Contentful Paint)

Value2.9 s

82/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.9 s

96/100

10%

Network Requests Diagram

index.html

6661 ms

bootstrap.css

8290 ms

font-awesome.min.css

2411 ms

main.css

7677 ms

1-160226225F4O3.jpg

15498 ms

Our browser made a total of 23 requests to load all elements on the main page. We found that 70% of them (16 requests) were addressed to the original Vihome.com.cn, 4% (1 request) were made to S95.cnzz.com and 4% (1 request) were made to Oz.cnzz.com. The less responsive or slowest element that took the longest time to load (20.3 sec) belongs to the original domain Vihome.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 82.7 kB (68%)

Content Size

122.0 kB

After Optimization

39.3 kB

In fact, the total size of Vihome.com.cn main page is 122.0 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. Only 10% of websites need less resources to load. Javascripts take 38.7 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 28.0 kB

  • Original 37.3 kB
  • After minification 34.8 kB
  • After compression 9.4 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. 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 28.0 kB or 75% of the original size.

Image Optimization

-36%

Potential reduce by 7.1 kB

  • Original 19.6 kB
  • After minification 12.6 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. Obviously, Vihome needs image optimization as it can save up to 7.1 kB or 36% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 26.4 kB

  • Original 38.7 kB
  • After minification 32.6 kB
  • After compression 12.4 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 26.4 kB or 68% of the original size.

CSS Optimization

-81%

Potential reduce by 21.3 kB

  • Original 26.3 kB
  • After minification 22.0 kB
  • After compression 5.0 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. Vihome.com.cn needs all CSS files to be minified and compressed as it can save up to 21.3 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (21%)

Requests Now

19

After Optimization

15

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vihome. 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.

Accessibility Review

vihome.com.cn accessibility score

57

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

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

vihome.com.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

SEO Factors

vihome.com.cn SEO score

92

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vihome.com.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 Vihome.com.cn main page’s claimed encoding is gb2312. 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 Vihome. 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: