Report Summary

  • 79

    Performance

    Renders faster than
    86% of other websites

  • 48

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

cnafw.com.cn

安防商务www.anfangsw.com安防网www.cnafw.com.cn-安防用品 安防设备 安防技术 安防器材 安防工程|监控|防盗|门禁 - 安防商务

Page Load Speed

11.2 sec in total

First Response

2.2 sec

Resources Loaded

8.8 sec

Page Rendered

191 ms

cnafw.com.cn screenshot

About Website

Visit cnafw.com.cn now to see the best up-to-date Cn Afw content and also check out these interesting facts you probably never knew about cnafw.com.cn

安防商务www.anfangsw.com安防网www.cnafw.com.cn是国内专业的安防用品综合信息发布平台,主要包括:监控设备 数字视频 门禁 考勤 报警防盗 楼宇对讲 安防软件 智能交通 消防设备 作业保护设备产品等信息,提供安防相关产品批发、代理、电子商务等服务信息,为安防监控企业建立最好网上的销售平台。

Visit cnafw.com.cn

Key Findings

We analyzed Cnafw.com.cn page load time and found that the first response time was 2.2 sec and then it took 9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster. This domain responded with an error, which can significantly jeopardize Cnafw.com.cn rating and web reputation

Performance Metrics

cnafw.com.cn performance score

79

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

95/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

55/100

25%

SI (Speed Index)

Value6.3 s

42/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.9 s

65/100

10%

Network Requests Diagram

cnafw.com.cn

2188 ms

style.css

298 ms

jbox.css

593 ms

jquery-1.7.2.min.js

1187 ms

common.js

599 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 70% of them (31 requests) were addressed to the original Cnafw.com.cn, 27% (12 requests) were made to Static.fsung.cn and 2% (1 request) were made to M.fsung.cn. The less responsive or slowest element that took the longest time to load (2.5 sec) relates to the external source Static.fsung.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 179.8 kB (43%)

Content Size

421.7 kB

After Optimization

242.0 kB

In fact, the total size of Cnafw.com.cn main page is 421.7 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 210.6 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 63.4 kB

  • Original 70.7 kB
  • After minification 48.4 kB
  • After compression 7.3 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 22.4 kB, which is 32% 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 63.4 kB or 90% of the original size.

Image Optimization

-12%

Potential reduce by 25.4 kB

  • Original 210.6 kB
  • After minification 185.3 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. Obviously, Cn Afw needs image optimization as it can save up to 25.4 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-64%

Potential reduce by 80.7 kB

  • Original 126.7 kB
  • After minification 123.5 kB
  • After compression 46.0 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 80.7 kB or 64% of the original size.

CSS Optimization

-75%

Potential reduce by 10.3 kB

  • Original 13.7 kB
  • After minification 13.1 kB
  • After compression 3.4 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. Cnafw.com.cn needs all CSS files to be minified and compressed as it can save up to 10.3 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (38%)

Requests Now

37

After Optimization

23

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cn Afw. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

cnafw.com.cn accessibility score

48

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

cnafw.com.cn 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

cnafw.com.cn SEO score

58

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

    UTF-8

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

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