Tools & Wizards About Us
alean.cn screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

alean.cn

艾礼安官网 - 艾礼安-以报警为核心的智慧消防和物联传感解决方案提供商

Page Load Speed

9 sec in total

First Response

651 ms

Resources Loaded

7.9 sec

Page Rendered

460 ms

alean.cn screenshot

About Website

Welcome to alean.cn homepage info - get ready to check Alean best content right away, or after learning these important things about alean.cn

艾礼安是一家以报警为核心的智慧消防和物联传感解决方案提供商，主要生产销售激光对射、脉冲电子围栏、张力电子围栏、振动光纤、泄漏电缆、校园一键报警设备、报警主机、防爆探测设备、火灾烟雾报警器、燃气泄漏报警器等，产品广泛应用在城市管廊、平安校园、智能楼宇、企业园区等场合

Visit alean.cn

Key Findings

We analyzed Alean.cn page load time and found that the first response time was 651 ms and then it took 8.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

alean.cn performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

10/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

2/100

25%

SI (Speed Index)

Value14.3 s

1/100

10%

TBT (Total Blocking Time)

Value190 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0.26

47/100

15%

TTI (Time to Interactive)

Value15.7 s

6/100

10%

Network Requests Diagram

alean.cn

651 ms

alean.cn

1118 ms

animate_fade.css

221 ms

swiper.min.css

449 ms

font_1491537_z01fqm78ny.css

21 ms

Our browser made a total of 65 requests to load all elements on the main page. We found that 86% of them (56 requests) were addressed to the original Alean.cn, 3% (2 requests) were made to Szcert.ebs.org.cn and 3% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (4.3 sec) belongs to the original domain Alean.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 293.0 kB (4%)

Content Size

6.7 MB

After Optimization

6.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Alean.cn main page is 6.7 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. 45% of websites need less resources to load. Images take 6.5 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 56.1 kB

  • Original 63.7 kB
  • After minification 40.9 kB
  • After compression 7.5 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 22.8 kB, which is 36% 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 56.1 kB or 88% of the original size.

Image Optimization

-2%

Potential reduce by 147.4 kB

  • Original 6.5 MB
  • After minification 6.3 MB

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. Alean images are well optimized though.

JavaScript Optimization

-59%

Potential reduce by 86.7 kB

  • Original 146.9 kB
  • After minification 134.1 kB
  • After compression 60.2 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 86.7 kB or 59% of the original size.

CSS Optimization

-10%

Potential reduce by 2.7 kB

  • Original 27.8 kB
  • After minification 27.8 kB
  • After compression 25.1 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. Alean.cn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 25 (40%)

Requests Now

63

After Optimization

38

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alean. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

alean.cn

alean.cn

651 ms

alean.cn

alean.cn

1118 ms

animate_fade.css

animate_fade.css

221 ms

swiper.min.css

swiper.min.css

449 ms

font_1491537_z01fqm78ny.css

font_1491537_z01fqm78ny.css

21 ms

svg_hamburger.css

svg_hamburger.css

660 ms

main.css

main.css

667 ms

style.css

style.css

671 ms

media.css

media.css

675 ms

jquery.min.js

jquery.min.js

946 ms

swiper.min.js

swiper.min.js

963 ms

main.js

main.js

878 ms

govicons.js

govicons.js

1338 ms

1599282630.png

1599282630.png

248 ms

sousuo_off.png

sousuo_off.png

235 ms

sousuo_on.png

sousuo_on.png

222 ms

mobile_monu.png

mobile_monu.png

220 ms

1712969794.jpg

1712969794.jpg

1337 ms

1712943451.jpg

1712943451.jpg

1222 ms

1713172850.jpg

1713172850.jpg

2044 ms

1713153872.jpg

1713153872.jpg

1628 ms

1692941033.jpg

1692941033.jpg

1355 ms

1693008703.jpg

1693008703.jpg

1290 ms

1648879260.jpg

1648879260.jpg

2252 ms

1638404673.jpg

1638404673.jpg

2263 ms

1700019515.png

1700019515.png

3172 ms

1700012988.png

1700012988.png

2850 ms

banner_icon_left.png

banner_icon_left.png

1865 ms

banner_icon_right.png

banner_icon_right.png

2104 ms

1639893129.jpg

1639893129.jpg

2827 ms

1639876896.jpg

1639876896.jpg

2675 ms

1639826586.jpg

1639826586.jpg

2745 ms

1601048844.jpg

1601048844.jpg

2794 ms

1601096946.jpg

1601096946.jpg

3005 ms

1601052734.jpg

1601052734.jpg

3129 ms

1601101598.jpg

1601101598.jpg

3174 ms

1601077458.jpg

1601077458.jpg

3191 ms

alean.cn

alean.cn

3338 ms

1722271052.jpg

1722271052.jpg

4002 ms

1722229897.jpg

1722229897.jpg

4218 ms

1721068173.jpg

1721068173.jpg

3973 ms

1717039278.jpg

1717039278.jpg

4041 ms

1716880815.jpg

1716880815.jpg

4095 ms

1716898030.jpg

1716898030.jpg

4099 ms

1618628198.png

1618628198.png

4216 ms

1597791840.png

1597791840.png

4242 ms

foot_tel.png

foot_tel.png

4260 ms

gosan.png

gosan.png

4324 ms

kefu_off.png

kefu_off.png

4302 ms

kefu_on.png

kefu_on.png

4222 ms

kefu_off_moblie.png

kefu_off_moblie.png

4239 ms

lianxi_off.png

lianxi_off.png

4238 ms

lianxi_on.png

lianxi_on.png

4243 ms

govIcon.gif

govIcon.gif

1032 ms

push.js

push.js

1248 ms

11.0.1.js

11.0.1.js

1668 ms

lianxi_off_moblie.png

lianxi_off_moblie.png

3327 ms

weixin_off.png

weixin_off.png

3286 ms

weixin_on.png

weixin_on.png

3328 ms

top_off.png

top_off.png

3339 ms

top_on.png

top_on.png

3067 ms

ab77b6ea7f3fbf79.js

ab77b6ea7f3fbf79.js

454 ms

hm.js

hm.js

1238 ms

hm.gif

hm.gif

318 ms

b.js

b.js

1451 ms

Accessibility Review

alean.cn accessibility score

73

Accessibility Issues

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

Links do not have a discernible name

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

alean.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

alean.cn SEO score

99

Search Engine Optimization Advices

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alean.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Alean.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

alean.cn

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