Tools & Wizards About Us

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 51

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

voipchina.cn

网络通信网——网络通信专家 原IP通信网

Page Load Speed

15.9 sec in total

First Response

1.1 sec

Resources Loaded

14.4 sec

Page Rendered

344 ms

About Website

Click here to check amazing Voipchina content. Otherwise, check out these important facts you probably never knew about voipchina.cn

网络通信（www.voipchina.cn）是通信行业具有重大影响力的网络通信资讯门户网站，垂直IP融合通信媒体平台。自2004年创立以来，始终致力于提供下一代网络通信资讯信息与商务服务。2008年荣获计世资讯通信类“中国行业网百强”称号；2010年荣获中国新媒体创新盛典年度“中国最具行业影响力网络通信行业门户网站”。

Visit voipchina.cn

Key Findings

We analyzed Voipchina.cn page load time and found that the first response time was 1.1 sec and then it took 14.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

voipchina.cn performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

2/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.06

98/100

15%

TTI (Time to Interactive)

Value6.9 s

54/100

10%

Network Requests Diagram

voipchina.cn

1081 ms

style.css

1226 ms

T.M.css

1263 ms

inc.js

1283 ms

default.js

1276 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 98% of them (78 requests) were addressed to the original Voipchina.cn, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (12.3 sec) belongs to the original domain Voipchina.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 435.5 kB (31%)

Content Size

1.4 MB

After Optimization

951.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Voipchina.cn main page is 1.4 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. 55% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 125.6 kB

  • Original 145.1 kB
  • After minification 128.1 kB
  • After compression 19.5 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. This page needs HTML code to be minified as it can gain 17.0 kB, which is 12% 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 125.6 kB or 87% of the original size.

Image Optimization

-25%

Potential reduce by 300.3 kB

  • Original 1.2 MB
  • After minification 904.1 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, Voipchina needs image optimization as it can save up to 300.3 kB or 25% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-21%

Potential reduce by 6.1 kB

  • Original 29.4 kB
  • After minification 28.1 kB
  • After compression 23.2 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 6.1 kB or 21% of the original size.

CSS Optimization

-46%

Potential reduce by 3.6 kB

  • Original 7.8 kB
  • After minification 7.8 kB
  • After compression 4.2 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. Voipchina.cn needs all CSS files to be minified and compressed as it can save up to 3.6 kB or 46% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (19%)

Requests Now

79

After Optimization

64

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Voipchina. 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

voipchina.cn accessibility score

51

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

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

voipchina.cn best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

voipchina.cn SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

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