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

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 47

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

szvisioncn.en.alibaba.com

Page Load Speed

3.5 sec in total

First Response

470 ms

Resources Loaded

2.6 sec

Page Rendered

405 ms

szvisioncn.en.alibaba.com screenshot

About Website

Welcome to szvisioncn.en.alibaba.com homepage info - get ready to check Szvisioncn En Alibaba best content for China right away, or after learning these important things about szvisioncn.en.alibaba.com

Shenzhen Vision Electronics Co., Ltd. Products:USB Flash Drive,Video Brochure,SD Card,USB Box,Keyboard and Mouse

Visit szvisioncn.en.alibaba.com

Key Findings

We analyzed Szvisioncn.en.alibaba.com page load time and found that the first response time was 470 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

szvisioncn.en.alibaba.com performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

49/100

25%

SI (Speed Index)

Value10.6 s

7/100

10%

TBT (Total Blocking Time)

Value4,830 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value26.3 s

0/100

10%

Network Requests Diagram

szvisioncn.en.alibaba.com

470 ms

szvisioncn.en.alibaba.com

365 ms

57 ms

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

46 ms

index.js

112 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 6% of them (2 requests) were addressed to the original Szvisioncn.en.alibaba.com, 42% (13 requests) were made to S.alicdn.com and 10% (3 requests) were made to Assets.alicdn.com. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source Sc04.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (47%)

Content Size

2.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Szvisioncn.en.alibaba.com main page is 2.4 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. 20% of websites need less resources to load. Javascripts take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 555.4 kB

  • Original 668.0 kB
  • After minification 667.2 kB
  • After compression 112.6 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 555.4 kB or 83% of the original size.

Image Optimization

-2%

Potential reduce by 6.5 kB

  • Original 262.2 kB
  • After minification 255.7 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. Szvisioncn En Alibaba images are well optimized though.

JavaScript Optimization

-38%

Potential reduce by 542.9 kB

  • Original 1.4 MB
  • After minification 1.4 MB
  • After compression 885.2 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 542.9 kB or 38% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (55%)

Requests Now

29

After Optimization

13

  • AJAX
  • Images
  • JavaScript

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Szvisioncn 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

szvisioncn.en.alibaba.com

szvisioncn.en.alibaba.com

470 ms

szvisioncn.en.alibaba.com

szvisioncn.en.alibaba.com

365 ms

57 ms

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

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

46 ms

index.js

index.js

112 ms

index.js

index.js

65 ms

renderHeader.js

renderHeader.js

66 ms

Hedd4ac6e81f64cef8ff0775c4752d8064.png

Hedd4ac6e81f64cef8ff0775c4752d8064.png

672 ms

awsc.js

awsc.js

59 ms

20 ms

7.gif

7.gif

147 ms

et_n.js

et_n.js

23 ms

um.js

um.js

87 ms

TB1k1Ive3oQMeJjy0FoXXcShVXa-1200-280.png

TB1k1Ive3oQMeJjy0FoXXcShVXa-1200-280.png

189 ms

HTB1el5InTZmx1VjSZFGq6yx2XXaB.jpg

HTB1el5InTZmx1VjSZFGq6yx2XXaB.jpg

368 ms

Haeb9cce089ae4de18ecaeff572f9c8d6O.jpg

Haeb9cce089ae4de18ecaeff572f9c8d6O.jpg

1585 ms

H7a6289c48f2a49098fc9440289cf3882q.jpg

H7a6289c48f2a49098fc9440289cf3882q.jpg

146 ms

Hf8a1438a317e4c60b15045b777c25d95Z.jpg

Hf8a1438a317e4c60b15045b777c25d95Z.jpg

224 ms

Custom-Wedding-Video-Book-7-10-Inch.png_250x250.jpg

Custom-Wedding-Video-Book-7-10-Inch.png_250x250.jpg

182 ms

Custom-LCD-Screen-Video-Card-Blank-Video.jpg_250x250.jpg

Custom-LCD-Screen-Video-Card-Blank-Video.jpg_250x250.jpg

158 ms

Custom-Wedding-Video-Book-7-10-Inch.png_350x350.jpg

Custom-Wedding-Video-Book-7-10-Inch.png_350x350.jpg

754 ms

Custom-LCD-Video-Greeting-Card-Video-Book.jpg_350x350.jpg

Custom-LCD-Video-Greeting-Card-Video-Book.jpg_350x350.jpg

427 ms

Key-Shape-USB-Flash-Drive.jpg_350x350.jpg

Key-Shape-USB-Flash-Drive.jpg_350x350.jpg

596 ms

Custom-Lanyard-USB-Flash-Drive-for-Promotional.jpg_350x350.jpg

Custom-Lanyard-USB-Flash-Drive-for-Promotional.jpg_350x350.jpg

827 ms

Custom-Photography-Velvet-USB-Gift-Box-Wedding.png_350x350.jpg

Custom-Photography-Velvet-USB-Gift-Box-Wedding.png_350x350.jpg

347 ms

TB1Z8vPSFXXXXXLXVXXXXXXXXXX-1519-200.png

TB1Z8vPSFXXXXXLXVXXXXXXXXXX-1519-200.png

199 ms

wu.json

wu.json

606 ms

um.json

um.json

52 ms

getUmid.do

getUmid.do

98 ms

eg.js

eg.js

3 ms

index.js

index.js

8 ms

Accessibility Review

szvisioncn.en.alibaba.com accessibility score

47

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

szvisioncn.en.alibaba.com best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

szvisioncn.en.alibaba.com SEO score

86

Search Engine Optimization Advices

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 Szvisioncn.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 Szvisioncn.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

szvisioncn.en.alibaba.com

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