Tools & Wizards About Us
szsafety.en.alibaba.com screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

szsafety.en.alibaba.com

Company Overview - Shenzhen Safety Electronic Technology Co., Ltd.

Page Load Speed

3 sec in total

First Response

528 ms

Resources Loaded

2.2 sec

Page Rendered

310 ms

szsafety.en.alibaba.com screenshot

About Website

Click here to check amazing Sz Safety En Alibaba content for China. Otherwise, check out these important facts you probably never knew about szsafety.en.alibaba.com

Shenzhen Safety Electronic Technology Co., Ltd. Products:Smoke Detector/Gas Detector/Motion Sensor/Door Sensor/WIFI Plug

Visit szsafety.en.alibaba.com

Key Findings

We analyzed Szsafety.en.alibaba.com page load time and found that the first response time was 528 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

szsafety.en.alibaba.com performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

83/100

25%

SI (Speed Index)

Value13.6 s

2/100

10%

TBT (Total Blocking Time)

Value4,640 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.493

17/100

15%

TTI (Time to Interactive)

Value24.3 s

0/100

10%

Network Requests Diagram

szsafety.en.alibaba.com

528 ms

szsafety.en.alibaba.com

223 ms

45 ms

O1CN0153JdbU26g4bILVOyC_!!6000000007690-2-tps-418-58.png

41 ms

O1CN01Xt4rje1w9QKVzNB6S_!!6000000006265-2-tps-3084-90.png

59 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 6% of them (2 requests) were addressed to the original Szsafety.en.alibaba.com, 31% (10 requests) were made to S.alicdn.com and 22% (7 requests) were made to Sc04.alicdn.com. The less responsive or slowest element that took the longest time to load (908 ms) relates to the external source Sc04.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 731.4 kB (41%)

Content Size

1.8 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Szsafety.en.alibaba.com main page is 1.8 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. 40% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 337.8 kB

  • Original 415.8 kB
  • After minification 415.1 kB
  • After compression 77.9 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 337.8 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 948 B

  • Original 42.2 kB
  • After minification 41.3 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. Sz Safety En Alibaba images are well optimized though.

JavaScript Optimization

-30%

Potential reduce by 392.6 kB

  • Original 1.3 MB
  • After minification 1.3 MB
  • After compression 929.9 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 392.6 kB or 30% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (37%)

Requests Now

30

After Optimization

19

  • AJAX
  • Images
  • JavaScript

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sz Safety En Alibaba. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

szsafety.en.alibaba.com

szsafety.en.alibaba.com

528 ms

szsafety.en.alibaba.com

szsafety.en.alibaba.com

223 ms

45 ms

O1CN0153JdbU26g4bILVOyC_!!6000000007690-2-tps-418-58.png

O1CN0153JdbU26g4bILVOyC_!!6000000007690-2-tps-418-58.png

41 ms

O1CN01Xt4rje1w9QKVzNB6S_!!6000000006265-2-tps-3084-90.png

O1CN01Xt4rje1w9QKVzNB6S_!!6000000006265-2-tps-3084-90.png

59 ms

index.js

index.js

67 ms

index.js

index.js

57 ms

renderHeader.js

renderHeader.js

59 ms

awsc.js

awsc.js

81 ms

15 ms

7.gif

7.gif

207 ms

O1CN01REbO5M1iNFNVX2yeq_!!6000000004400-2-tps-1920-200.png

O1CN01REbO5M1iNFNVX2yeq_!!6000000004400-2-tps-1920-200.png

28 ms

H19f745729d0948439cc44a2bc32b12a26.jpg

H19f745729d0948439cc44a2bc32b12a26.jpg

509 ms

H068548d490a0431b8bdf3c11c47ec1a6i.jpg

H068548d490a0431b8bdf3c11c47ec1a6i.jpg

782 ms

H83f457e9078a488bab7305adee40e9acG.jpg

H83f457e9078a488bab7305adee40e9acG.jpg

540 ms

H57b9337a13ec4ab8ab49c40802ce0ff36.jpg

H57b9337a13ec4ab8ab49c40802ce0ff36.jpg

834 ms

H644677a7daa0485b89b46c6e814bce5ad.jpg

H644677a7daa0485b89b46c6e814bce5ad.jpg

908 ms

Ha07692c7e29f41848c3c86ddc75c66e66.jpg

Ha07692c7e29f41848c3c86ddc75c66e66.jpg

713 ms

H1ed93761e031492993941234d2a1c8c2J.jpg

H1ed93761e031492993941234d2a1c8c2J.jpg

530 ms

H22b19388652b4a57ba374369b3b680dc0.png_100x100.png

H22b19388652b4a57ba374369b3b680dc0.png_100x100.png

539 ms

O1CN01kpueUS231orwYDJAV_!!6000000007196-2-tps-132-34.png

O1CN01kpueUS231orwYDJAV_!!6000000007196-2-tps-132-34.png

28 ms

O1CN01gZ3lTu1XIFHZfHHGr_!!6000000002900-2-tps-36-36.png

O1CN01gZ3lTu1XIFHZfHHGr_!!6000000002900-2-tps-36-36.png

28 ms

H0193f5539f0d4040be186a3c9cef4b11k.jpg

H0193f5539f0d4040be186a3c9cef4b11k.jpg

900 ms

Hot-sales-High-Sensitivity-Standalone-Tuya-APP.jpg_350x350.jpg

Hot-sales-High-Sensitivity-Standalone-Tuya-APP.jpg_350x350.jpg

606 ms

APP-Wifi-Smart-Socket-with-European-Plug.jpg_350x350.jpg

APP-Wifi-Smart-Socket-with-European-Plug.jpg_350x350.jpg

505 ms

et_n.js

et_n.js

38 ms

um.js

um.js

133 ms

wu.json

wu.json

344 ms

um.json

um.json

55 ms

getUmid.do

getUmid.do

524 ms

eg.js

eg.js

3 ms

index.js

index.js

4 ms

Accessibility Review

szsafety.en.alibaba.com accessibility score

69

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

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

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

szsafety.en.alibaba.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

szsafety.en.alibaba.com SEO score

79

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 doesn't use legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Szsafety.en.alibaba.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Szsafety.en.alibaba.com 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

szsafety.en.alibaba.com

Open Graph data is detected on the main page of Sz Safety En Alibaba. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: