Tools & Wizards About Us

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

vibunion.com

声振论坛 - 振动,动力学,声学,信号处理,故障诊断 - Powered by Discuz!

Page Load Speed

60.1 sec in total

First Response

4.6 sec

Resources Loaded

54.6 sec

Page Rendered

823 ms

About Website

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

振动不息，战斗不止，声振论坛(forum.vibunion.com)，振动与声学领域的最大交流平台，促进振动领域科研人员的交流和创新。论坛提供了开放性的技术讨论环境，内容包括力学、声学、数学、故障诊断、工程仿真分析CAE、计算机辅助设计及制造CAD/CAM、流体动力学分析CFD/EFD、数学工具Matlab等，涉及机械工程、车辆工程、土木工程、材料科学、航空航天、化工店里、船舶海洋等各个工程技术领...

Visit vibunion.com

Key Findings

We analyzed Vibunion.com page load time and found that the first response time was 4.6 sec and then it took 55.5 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 were 16 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

vibunion.com performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.6 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.6 s

100/100

25%

SI (Speed Index)

Value1.3 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.6 s

100/100

10%

Network Requests Diagram

forum.vibunion.com

4607 ms

style_5_common.css

2769 ms

style_5_forum_index.css

15075 ms

common.js

20374 ms

forum.js

3344 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Vibunion.com, 91% (52 requests) were made to Forum.vibunion.com and 5% (3 requests) were made to Tcss.qq.com. The less responsive or slowest element that took the longest time to load (20.4 sec) relates to the external source Forum.vibunion.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 259.1 kB (64%)

Content Size

401.9 kB

After Optimization

142.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vibunion.com main page is 401.9 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 144.1 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 66.7 kB

  • Original 84.2 kB
  • After minification 83.5 kB
  • After compression 17.5 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 66.7 kB or 79% of the original size.

Image Optimization

-46%

Potential reduce by 65.9 kB

  • Original 144.1 kB
  • After minification 78.2 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, Vibunion needs image optimization as it can save up to 65.9 kB or 46% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-69%

Potential reduce by 65.7 kB

  • Original 95.8 kB
  • After minification 89.5 kB
  • After compression 30.1 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 65.7 kB or 69% of the original size.

CSS Optimization

-78%

Potential reduce by 60.8 kB

  • Original 77.8 kB
  • After minification 76.2 kB
  • After compression 17.0 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. Vibunion.com needs all CSS files to be minified and compressed as it can save up to 60.8 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (28%)

Requests Now

39

After Optimization

28

  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vibunion. 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.

Network Requests Diagram

Accessibility Review

vibunion.com accessibility score

76

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.

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

Best Practices

vibunion.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

vibunion.com SEO score

64

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GBK

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