Report Summary

  • 46

    Performance

    Renders faster than
    65% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 65

    SEO

    Google-friendlier than
    25% of websites

voasun.com

深圳市华桑电子有限公司_ALPS代理_KEL代理_电位器_编码器_位置传感器_极细同轴电缆连接器_LED灯珠_碳化硅功率器件_霍尔器件

Page Load Speed

76 sec in total

First Response

6.3 sec

Resources Loaded

69.5 sec

Page Rendered

226 ms

voasun.com screenshot

About Website

Click here to check amazing Voasun content. Otherwise, check out these important facts you probably never knew about voasun.com

华桑电子专业代理ALPS,ALPS开关,ALPS传感器,ALPS编码器,ALPS电位器,KEL,KEL连接器,聚飞光电LED灯珠,博维逻辑存储芯片,SIC MOSFET,IGBT,霍尔器件。

Visit voasun.com

Key Findings

We analyzed Voasun.com page load time and found that the first response time was 6.3 sec and then it took 69.8 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 7 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

voasun.com performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value3.4 s

68/100

25%

SI (Speed Index)

Value10.7 s

7/100

10%

TBT (Total Blocking Time)

Value1,140 ms

22/100

30%

CLS (Cumulative Layout Shift)

Value0.157

74/100

15%

TTI (Time to Interactive)

Value10.9 s

21/100

10%

Network Requests Diagram

voasun.com

6275 ms

erwei.css

1273 ms

jquery-1.9.1.min.js

17813 ms

uaredirect.js

1725 ms

govicon.js

20027 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 41% of them (31 requests) were addressed to the original Voasun.com, 17% (13 requests) were made to Qiao.baidu.com and 9% (7 requests) were made to P5.qiao.baidu.com. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source Cert.ebs.gov.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 91.5 kB (34%)

Content Size

265.5 kB

After Optimization

174.0 kB

In fact, the total size of Voasun.com main page is 265.5 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. 20% of websites need less resources to load. Images take 143.9 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 28.9 kB

  • Original 37.9 kB
  • After minification 36.5 kB
  • After compression 9.0 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 28.9 kB or 76% of the original size.

Image Optimization

-3%

Potential reduce by 4.5 kB

  • Original 143.9 kB
  • After minification 139.3 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. Voasun images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 29.3 kB

  • Original 47.3 kB
  • After minification 46.1 kB
  • After compression 18.0 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 29.3 kB or 62% of the original size.

CSS Optimization

-79%

Potential reduce by 28.8 kB

  • Original 36.5 kB
  • After minification 27.0 kB
  • After compression 7.7 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. Voasun.com needs all CSS files to be minified and compressed as it can save up to 28.8 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (57%)

Requests Now

65

After Optimization

28

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Voasun. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

voasun.com accessibility score

70

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

voasun.com best practices score

50

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

Browser errors were logged to the console

SEO Factors

voasun.com SEO score

65

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Voasun.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 Voasun.com 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 Voasun. 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: