Tools & Wizards About Us
jers-tech.en.alibaba.com screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

jers-tech.en.alibaba.com

Company Overview - Shenzhen Jers Technology Co., Ltd.

Page Load Speed

3.3 sec in total

First Response

585 ms

Resources Loaded

2.6 sec

Page Rendered

106 ms

jers-tech.en.alibaba.com screenshot

About Website

Visit jers-tech.en.alibaba.com now to see the best up-to-date Jers Tech En Alibaba content for China and also check out these interesting facts you probably never knew about jers-tech.en.alibaba.com

Shenzhen Jers Technology Co., Ltd. Products:Phone Case & Accessories,Watch Strap & Accessories,Sport Watch & Earphone,Other Electronic Products,OEM/ODM Products

Visit jers-tech.en.alibaba.com

Key Findings

We analyzed Jers-tech.en.alibaba.com page load time and found that the first response time was 585 ms and then it took 2.7 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

jers-tech.en.alibaba.com performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

75/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value3,570 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.051

99/100

15%

TTI (Time to Interactive)

Value25.6 s

0/100

10%

Network Requests Diagram

jers-tech.en.alibaba.com

585 ms

jers-tech.en.alibaba.com

294 ms

32 ms

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

39 ms

index.js

70 ms

Our browser made a total of 40 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original Jers-tech.en.alibaba.com, 38% (15 requests) were made to Sc01.alicdn.com and 15% (6 requests) were made to S.alicdn.com. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Sc01.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 797.7 kB (44%)

Content Size

1.8 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Jers-tech.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. 25% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 403.9 kB

  • Original 493.6 kB
  • After minification 492.8 kB
  • After compression 89.7 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 403.9 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 4.8 kB
  • After minification 4.8 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. Jers Tech En Alibaba images are well optimized though.

JavaScript Optimization

-30%

Potential reduce by 393.9 kB

  • Original 1.3 MB
  • After minification 1.3 MB
  • After compression 930.0 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 393.9 kB or 30% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (29%)

Requests Now

38

After Optimization

27

  • AJAX
  • Images
  • JavaScript

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jers Tech 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

jers-tech.en.alibaba.com

jers-tech.en.alibaba.com

585 ms

jers-tech.en.alibaba.com

jers-tech.en.alibaba.com

294 ms

32 ms

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

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

39 ms

index.js

index.js

70 ms

index.js

index.js

40 ms

renderHeader.js

renderHeader.js

63 ms

awsc.js

awsc.js

38 ms

6 ms

7.gif

7.gif

21 ms

et_n.js

et_n.js

12 ms

um.js

um.js

11 ms

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Hd2bc09c113904d2dbbad97b88ece5f4fH.jpg

113 ms

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HTB17bmFRBLoK1RjSZFuq6xn0XXau.jpg

459 ms

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HTB1Fsu9RxjaK1RjSZKzq6xVwXXa2.jpg

505 ms

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Hac3e7fb744174a66bf30fa6f0949cdabz.jpg

1224 ms

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474 ms

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682 ms

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412 ms

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1192 ms

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HTB1NZu9RxjaK1RjSZKzq6xVwXXar.jpg

576 ms

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HTB1QFfGeu3tHKVjSZSgq6x4QFXa7.jpg

916 ms

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HTB1hRCSRsfpK1RjSZFOq6y6nFXaO.jpg

918 ms

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924 ms

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1006 ms

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1723 ms

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1604 ms

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1426 ms

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1479 ms

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1441 ms

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634 ms

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442 ms

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658 ms

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H4534862c1d7a4c168884da3be3b05240t.jpg

541 ms

H3300736db6dd4d3b9ec22fa970e79ccaV.jpg

H3300736db6dd4d3b9ec22fa970e79ccaV.jpg

493 ms

wu.json

wu.json

409 ms

um.json

um.json

53 ms

getUmid.do

getUmid.do

35 ms

eg.js

eg.js

3 ms

index.js

index.js

3 ms

Accessibility Review

jers-tech.en.alibaba.com accessibility score

75

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.

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

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

High

Image elements do not have [alt] attributes

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

jers-tech.en.alibaba.com best practices score

67

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

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

jers-tech.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 Jers-tech.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 Jers-tech.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

jers-tech.en.alibaba.com

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