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jcwelec.en.alibaba.com screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 43

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

Page Load Speed

4.5 sec in total

First Response

92 ms

Resources Loaded

4 sec

Page Rendered

404 ms

jcwelec.en.alibaba.com screenshot

About Website

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

Visit jcwelec.en.alibaba.com

Key Findings

We analyzed Jcwelec.en.alibaba.com page load time and found that the first response time was 92 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

jcwelec.en.alibaba.com performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

72/100

25%

SI (Speed Index)

Value9.7 s

10/100

10%

TBT (Total Blocking Time)

Value4,860 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.051

99/100

15%

TTI (Time to Interactive)

Value24.7 s

0/100

10%

Network Requests Diagram

jcwelec.en.alibaba.com

92 ms

jcwelec.en.alibaba.com

382 ms

138 ms

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

174 ms

index.js

304 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 7% of them (2 requests) were addressed to the original Jcwelec.en.alibaba.com, 38% (11 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 (3.5 sec) relates to the external source Sc04.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (53%)

Content Size

2.1 MB

After Optimization

996.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Jcwelec.en.alibaba.com main page is 2.1 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 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 573.1 kB

  • Original 678.2 kB
  • After minification 677.4 kB
  • After compression 105.1 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 573.1 kB or 85% of the original size.

Image Optimization

-7%

Potential reduce by 468 B

  • Original 6.7 kB
  • After minification 6.2 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. Jcwelec En Alibaba images are well optimized though.

JavaScript Optimization

-38%

Potential reduce by 543.1 kB

  • Original 1.4 MB
  • After minification 1.4 MB
  • After compression 885.3 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 543.1 kB or 38% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (41%)

Requests Now

27

After Optimization

16

  • AJAX
  • Images
  • JavaScript

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jcwelec 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

jcwelec.en.alibaba.com

jcwelec.en.alibaba.com

92 ms

jcwelec.en.alibaba.com

jcwelec.en.alibaba.com

382 ms

138 ms

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

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

174 ms

index.js

index.js

304 ms

index.js

index.js

288 ms

renderHeader.js

renderHeader.js

266 ms

awsc.js

awsc.js

154 ms

79 ms

H1b62bb412f8545daa5dcc7bcfe8001ecS.png

H1b62bb412f8545daa5dcc7bcfe8001ecS.png

401 ms

O1CN01kdASbu1gwr9DpPPgA_!!6000000004207-2-tps-290-296.png

O1CN01kdASbu1gwr9DpPPgA_!!6000000004207-2-tps-290-296.png

73 ms

O1CN01eP7P8d1y1kdsWFgqQ_!!6000000006519-2-tps-1920-200.png

O1CN01eP7P8d1y1kdsWFgqQ_!!6000000006519-2-tps-1920-200.png

86 ms

Ha5968af538d24ccaac8060b4745e9d778.jpg

Ha5968af538d24ccaac8060b4745e9d778.jpg

318 ms

H0d638ede75e0414cbd053c143d8fc477f.png

H0d638ede75e0414cbd053c143d8fc477f.png

88 ms

JCW-325A-Factory-Supply-Electric-Wire-Twist.png_250x250.jpg

JCW-325A-Factory-Supply-Electric-Wire-Twist.png_250x250.jpg

811 ms

7.gif

7.gif

57 ms

TB1Gvmpg7P2gK0jSZPxXXacQpXa-1200-230.jpg

TB1Gvmpg7P2gK0jSZPxXXacQpXa-1200-230.jpg

188 ms

H80c960af11074f3c8dc6290d920803eaA.jpg

H80c960af11074f3c8dc6290d920803eaA.jpg

600 ms

H5e64cb016570441dbcb7a141f7505e1cE.jpg

H5e64cb016570441dbcb7a141f7505e1cE.jpg

3503 ms

JCW-320D-high-quality-electric-wire-cable.jpg_480x480.jpg

JCW-320D-high-quality-electric-wire-cable.jpg_480x480.jpg

397 ms

Automatic-armature-winding-machine-electric-motor-winding.jpg_480x480.jpg

Automatic-armature-winding-machine-electric-motor-winding.jpg_480x480.jpg

341 ms

TB13qeCOVXXXXafaVXXXXXXXXXX-1200-280.jpg

TB13qeCOVXXXXafaVXXXXXXXXXX-1200-280.jpg

182 ms

et_n.js

et_n.js

24 ms

um.js

um.js

114 ms

wu.json

wu.json

710 ms

eg.js

eg.js

3 ms

um.json

um.json

55 ms

getUmid.do

getUmid.do

101 ms

index.js

index.js

7 ms

Accessibility Review

jcwelec.en.alibaba.com accessibility score

43

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

jcwelec.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

High

Serves images with low resolution

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

jcwelec.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 Jcwelec.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 Jcwelec.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

jcwelec.en.alibaba.com

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