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

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

jbcz.en.alibaba.com

Company Overview - Changzhou Jianlian Reinforcing Bar Conjunction Co., Ltd.

Page Load Speed

4 sec in total

First Response

483 ms

Resources Loaded

2.3 sec

Page Rendered

1.2 sec

jbcz.en.alibaba.com screenshot

About Website

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

Changzhou Jianlian Reinforcing Bar Conjunction Co., Ltd. Products:Rebar Coupler,Upset Forging Parallel Thread Machine,Rebar Splicing,Coupler,Rib Peeling Roll Stamping Machine

Visit jbcz.en.alibaba.com

Key Findings

We analyzed Jbcz.en.alibaba.com page load time and found that the first response time was 483 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

jbcz.en.alibaba.com performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

19/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value4,050 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.498

16/100

15%

TTI (Time to Interactive)

Value25.4 s

0/100

10%

Network Requests Diagram

jbcz.en.alibaba.com

483 ms

jbcz.en.alibaba.com

340 ms

40 ms

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

34 ms

161 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 7% of them (2 requests) were addressed to the original Jbcz.en.alibaba.com, 27% (8 requests) were made to S.alicdn.com and 17% (5 requests) were made to Assets.alicdn.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Sc04.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (51%)

Content Size

2.0 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Jbcz.en.alibaba.com main page is 2.0 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. 30% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 638.0 kB

  • Original 746.0 kB
  • After minification 745.3 kB
  • After compression 108.0 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 638.0 kB or 86% 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. Jbcz En Alibaba images are well optimized though.

JavaScript Optimization

-31%

Potential reduce by 398.6 kB

  • Original 1.3 MB
  • After minification 1.3 MB
  • After compression 889.8 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 398.6 kB or 31% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (46%)

Requests Now

28

After Optimization

15

  • AJAX
  • Images
  • JavaScript

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jbcz 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 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

jbcz.en.alibaba.com

jbcz.en.alibaba.com

483 ms

jbcz.en.alibaba.com

jbcz.en.alibaba.com

340 ms

40 ms

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

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

34 ms

161 ms

renderHeader.js

renderHeader.js

80 ms

H10bb0ed1358c4766b1838e5b383f500fA.jpg

H10bb0ed1358c4766b1838e5b383f500fA.jpg

604 ms

H58246446a6a941dcbe452aa092e863d8V.jpg

H58246446a6a941dcbe452aa092e863d8V.jpg

704 ms

H79ab09df69fa47c298adecc5b4b2866bM.jpg

H79ab09df69fa47c298adecc5b4b2866bM.jpg

1161 ms

awsc.js

awsc.js

31 ms

6 ms

7.gif

7.gif

91 ms

index.js

index.js

90 ms

index.js

index.js

14 ms

et_n.js

et_n.js

16 ms

um.js

um.js

85 ms

baxiaCommon.js

baxiaCommon.js

32 ms

wcfg.json

wcfg.json

976 ms

rp

rp

1086 ms

Ha853adec28fc4b3cb2f60fff01c013d5T.jpg

Ha853adec28fc4b3cb2f60fff01c013d5T.jpg

350 ms

wu.json

wu.json

82 ms

He826f36f19d54ed1bfb50c8f2cd90fcev.jpg

He826f36f19d54ed1bfb50c8f2cd90fcev.jpg

189 ms

H01eed059d6224a178dc0317f749e65cfx.jpg

H01eed059d6224a178dc0317f749e65cfx.jpg

1450 ms

H37cf919e9fbc4236b921962e54111f375.jpg

H37cf919e9fbc4236b921962e54111f375.jpg

916 ms

Hcc67c94fec404acdbc59b6065fd3d3c7d.jpg

Hcc67c94fec404acdbc59b6065fd3d3c7d.jpg

443 ms

Hfa86b0a25afb4bd2a234085e08d23d63s.jpg

Hfa86b0a25afb4bd2a234085e08d23d63s.jpg

659 ms

H171b176d8c154bc585e66f40d594c6e6Y.jpg

H171b176d8c154bc585e66f40d594c6e6Y.jpg

826 ms

um.json

um.json

56 ms

getUmid.do

getUmid.do

279 ms

eg.js

eg.js

3 ms

Accessibility Review

jbcz.en.alibaba.com accessibility score

70

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

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

jbcz.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

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

jbcz.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 Jbcz.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 Jbcz.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

jbcz.en.alibaba.com

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