Tools & Wizards About Us
usr.cn screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 80

    SEO

    Google-friendlier than
    42% of websites

usr.cn

串口服务器_4G DTU_5G工业路由器_边缘计算网关_以太网/蓝牙/Lora/WIFI模块-济南有人物联网技术有限公司官网

Page Load Speed

31.4 sec in total

First Response

1.5 sec

Resources Loaded

28.8 sec

Page Rendered

1.1 sec

usr.cn screenshot

About Website

Visit usr.cn now to see the best up-to-date Usr content for Hong Kong and also check out these interesting facts you probably never knew about usr.cn

有人物联网定位为可信赖的智慧工业物联网伙伴。主营5G/4G工业级无线路由器、串口服务器、数传终端DTU、边缘计算网关、Cat-1模块、LoRa网关/模块、4G DTU、4G模块、蓝牙模块、串口WIFI模块、WIFI无线串口服务器、串口转以太网模块、超级网口以及云平台传输，实现软硬一体化联网解决方案。

Visit usr.cn

Key Findings

We analyzed Usr.cn page load time and found that the first response time was 1.5 sec and then it took 29.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 6 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

usr.cn performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value20.2 s

0/100

25%

SI (Speed Index)

Value17.9 s

0/100

10%

TBT (Total Blocking Time)

Value310 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value1.617

0/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

usr.cn

1498 ms

www.usr.cn

86 ms

style.mini.css

2736 ms

usrjquery.mini.js

2812 ms

wpa.php

960 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 68% of them (21 requests) were addressed to the original Usr.cn, 10% (3 requests) were made to Combo.b.qq.com and 6% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (20 sec) belongs to the original domain Usr.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 258.4 kB (21%)

Content Size

1.2 MB

After Optimization

984.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Usr.cn main page is 1.2 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. 25% of websites need less resources to load. Images take 913.6 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 29.0 kB

  • Original 40.9 kB
  • After minification 38.9 kB
  • After compression 11.9 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 29.0 kB or 71% of the original size.

Image Optimization

-8%

Potential reduce by 68.8 kB

  • Original 913.6 kB
  • After minification 844.8 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. Usr images are well optimized though.

JavaScript Optimization

-47%

Potential reduce by 96.9 kB

  • Original 208.0 kB
  • After minification 208.0 kB
  • After compression 111.1 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 96.9 kB or 47% of the original size.

CSS Optimization

-79%

Potential reduce by 63.7 kB

  • Original 80.7 kB
  • After minification 80.7 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. Usr.cn needs all CSS files to be minified and compressed as it can save up to 63.7 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (35%)

Requests Now

23

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Usr. 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 as a result speed up the page load time.

Network Requests Diagram

usr.cn

usr.cn

1498 ms

www.usr.cn

www.usr.cn

86 ms

style.mini.css

style.mini.css

2736 ms

usrjquery.mini.js

usrjquery.mini.js

2812 ms

wpa.php

wpa.php

960 ms

index.png

index.png

7707 ms

57070e682f1aa.jpg

57070e682f1aa.jpg

8211 ms

570742f5033c5.jpg

570742f5033c5.jpg

4445 ms

56035a325aa8e.jpg

56035a325aa8e.jpg

19949 ms

564aa649d79ed.jpg

564aa649d79ed.jpg

19950 ms

55cd691fa7ccc.jpg

55cd691fa7ccc.jpg

19949 ms

569da95c985e1.jpg

569da95c985e1.jpg

19948 ms

1.jpg

1.jpg

10542 ms

2.jpg

2.jpg

13251 ms

3.jpg

3.jpg

17641 ms

55a31acf597b4_s.jpg

55a31acf597b4_s.jpg

15102 ms

564578c799c8e_s.jpg

564578c799c8e_s.jpg

16885 ms

55c81166d6059_s.jpg

55c81166d6059_s.jpg

19315 ms

5559b10f152e3_s.jpg

5559b10f152e3_s.jpg

19275 ms

550b88f9d42ab_s.jpg

550b88f9d42ab_s.jpg

19943 ms

53b4f4cacea1d_s.jpg

53b4f4cacea1d_s.jpg

19944 ms

h.js

h.js

1730 ms

Panel.js

Panel.js

756 ms

localStorage.js

localStorage.js

792 ms

contains.js

contains.js

299 ms

r.cgi

r.cgi

1941 ms

ta.php

ta.php

689 ms

crmqq.php

crmqq.php

17021 ms

wpa_first_heart_beat.php

wpa_first_heart_beat.php

685 ms

hm.gif

hm.gif

383 ms

bullet-type-1.png

bullet-type-1.png

18853 ms

Accessibility Review

usr.cn accessibility score

68

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

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

[id] attributes on active, focusable elements are not unique

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

usr.cn best practices score

67

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

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

usr.cn SEO score

80

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

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

    UTF-8

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

usr.cn

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