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

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

chinainverter.en.alibaba.com

Qingdao Powtech Electronics Co., Ltd. - UPS POWER SUPPLY, INVERTER

Page Load Speed

4.4 sec in total

First Response

324 ms

Resources Loaded

3.9 sec

Page Rendered

205 ms

chinainverter.en.alibaba.com screenshot

About Website

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

Qingdao Powtech Electronics Co., Ltd., Experts in Manufacturing and Exporting UPS POWER SUPPLY, INVERTER and 0 more Products.

Visit chinainverter.en.alibaba.com

Key Findings

We analyzed Chinainverter.en.alibaba.com page load time and found that the first response time was 324 ms and then it took 4.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

chinainverter.en.alibaba.com performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

61/100

25%

SI (Speed Index)

Value12.3 s

3/100

10%

TBT (Total Blocking Time)

Value4,830 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.822

4/100

15%

TTI (Time to Interactive)

Value26.1 s

0/100

10%

Network Requests Diagram

chinainverter.en.alibaba.com

324 ms

chinainverter.en.alibaba.com

644 ms

91 ms

78 ms

header.css

159 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Chinainverter.en.alibaba.com, 43% (30 requests) were made to S.alicdn.com and 10% (7 requests) were made to Assets.alicdn.com. The less responsive or slowest element that took the longest time to load (3 sec) relates to the external source S.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.6 MB (52%)

Content Size

3.0 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chinainverter.en.alibaba.com main page is 3.0 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 326.8 kB

  • Original 408.8 kB
  • After minification 404.9 kB
  • After compression 82.0 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 326.8 kB or 80% of the original size.

Image Optimization

-16%

Potential reduce by 8.9 kB

  • Original 57.1 kB
  • After minification 48.2 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. Obviously, China INVERTER En Alibaba needs image optimization as it can save up to 8.9 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-45%

Potential reduce by 1.0 MB

  • Original 2.3 MB
  • After minification 2.3 MB
  • After compression 1.3 MB

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 1.0 MB or 45% of the original size.

CSS Optimization

-84%

Potential reduce by 202.2 kB

  • Original 239.8 kB
  • After minification 189.0 kB
  • After compression 37.6 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Chinainverter.en.alibaba.com needs all CSS files to be minified and compressed as it can save up to 202.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 42 (72%)

Requests Now

58

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of China INVERTER 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 28 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

chinainverter.en.alibaba.com

chinainverter.en.alibaba.com

324 ms

chinainverter.en.alibaba.com

chinainverter.en.alibaba.com

644 ms

91 ms

78 ms

header.css

header.css

159 ms

header.js

header.js

89 ms

71 ms

web-index.css

web-index.css

78 ms

web-index.css

web-index.css

78 ms

web-index.css

web-index.css

165 ms

web-index.css

web-index.css

86 ms

web-index.css

web-index.css

86 ms

182 ms

161 ms

index.js

index.js

159 ms

178 ms

HTB1pIHogbGYBuNjy0Fo763iBFXaU.png

HTB1pIHogbGYBuNjy0Fo763iBFXaU.png

1634 ms

HTB17o4jaS8YBeNkSnb4q6yevFXai.jpg

HTB17o4jaS8YBeNkSnb4q6yevFXai.jpg

903 ms

TB1VtZtebH1gK0jSZFwXXc7aXXa-65-70.gif

TB1VtZtebH1gK0jSZFwXXc7aXXa-65-70.gif

686 ms

HTB1NAy1eDtYBeNjy1Xdq6xXyVXaG.jpg

HTB1NAy1eDtYBeNjy1Xdq6xXyVXaG.jpg

850 ms

HTB1KjpeeGSWBuNjSsrbq6y0mVXah.jpg

HTB1KjpeeGSWBuNjSsrbq6y0mVXah.jpg

686 ms

HTB1NwsPaDmWBKNjSZFBq6xxUFXaB.jpg

HTB1NwsPaDmWBKNjSZFBq6xxUFXaB.jpg

600 ms

TB1QhYprKT2gK0jSZFvXXXnFXXa-20-20.png

TB1QhYprKT2gK0jSZFvXXXnFXXa-20-20.png

850 ms

personTipsInfo.do

personTipsInfo.do

378 ms

awsc.js

awsc.js

78 ms

151 ms

61 ms

HTB1ZopmgDlYBeNjSszc762whFXaC.png

HTB1ZopmgDlYBeNjSszc762whFXaC.png

471 ms

TB1hVGkvVP7gK0jSZFjXXc5aXXa-365-49.svg

TB1hVGkvVP7gK0jSZFjXXc5aXXa-365-49.svg

32 ms

TB1mHDTXMaH3KVjSZFpXXbhKpXa-600-400.png

TB1mHDTXMaH3KVjSZFpXXbhKpXa-600-400.png

30 ms

HTB1NIXEdh1YBuNjy1zcq6zNcXXa0.jpg

HTB1NIXEdh1YBuNjy1zcq6zNcXXa0.jpg

3038 ms

roboto-regular.woff

roboto-regular.woff

31 ms

roboto-medium.woff

roboto-medium.woff

41 ms

roboto-light.woff

roboto-light.woff

40 ms

roboto-thin.woff

roboto-thin.woff

51 ms

roboto-bold.woff

roboto-bold.woff

112 ms

et_n.js

et_n.js

91 ms

um.js

um.js

105 ms

icon-font.woff

icon-font.woff

43 ms

font_515771_xjdbujl2iu.woff

font_515771_xjdbujl2iu.woff

195 ms

footer.css

footer.css

26 ms

eg.js

eg.js

328 ms

light0.5x.png

light0.5x.png

49 ms

pages_version.html

pages_version.html

73 ms

defer-common.js

defer-common.js

353 ms

i.alicdn.com

i.alicdn.com

346 ms

index.js

index.js

66 ms

wu.json

wu.json

482 ms

sc.sc_header_footer.schd_coms

sc.sc_header_footer.schd_coms

162 ms

index.web.css

index.web.css

33 ms

index.web.js

index.web.js

56 ms

need_show_cookie_setting.do

need_show_cookie_setting.do

419 ms

availableSurveyQuery.json

availableSurveyQuery.json

345 ms

sc.globalxman.appscene

sc.globalxman.appscene

7 ms

index.js

index.js

31 ms

index.js

index.js

9 ms

7.gif

7.gif

7 ms

baxiaCommon.js

baxiaCommon.js

19 ms

rp

rp

1299 ms

index.js

index.js

149 ms

store-proxy.html

store-proxy.html

149 ms

countryCurrencyDataService

countryCurrencyDataService

346 ms

sc.sc_header_footer.sc_hds

sc.sc_header_footer.sc_hds

99 ms

personRoleInfo.do

personRoleInfo.do

89 ms

notification.do

notification.do

126 ms

um.json

um.json

56 ms

getUmid.do

getUmid.do

9 ms

iconfont.woff

iconfont.woff

18 ms

iconfont.woff

iconfont.woff

80 ms

Accessibility Review

chinainverter.en.alibaba.com accessibility score

66

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

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

chinainverter.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

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

chinainverter.en.alibaba.com SEO score

71

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

High

Document doesn't have a valid hreflang

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 Chinainverter.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 Chinainverter.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

chinainverter.en.alibaba.com

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