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

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

vactec.en.alibaba.com

Shanxi Vactec Co., Ltd. - Vacuum flange and fittings, Vacuum valves

Page Load Speed

4.7 sec in total

First Response

79 ms

Resources Loaded

4.3 sec

Page Rendered

313 ms

vactec.en.alibaba.com screenshot

About Website

Click here to check amazing Vactec En Alibaba content for China. Otherwise, check out these important facts you probably never knew about vactec.en.alibaba.com

Shanxi Vactec Co., Ltd., Experts in Manufacturing and Exporting Vacuum flange and fittings, Vacuum valves and 0 more Products.

Visit vactec.en.alibaba.com

Key Findings

We analyzed Vactec.en.alibaba.com page load time and found that the first response time was 79 ms and then it took 4.6 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

vactec.en.alibaba.com performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

69/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

85/100

25%

SI (Speed Index)

Value10.9 s

6/100

10%

TBT (Total Blocking Time)

Value6,400 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.155

74/100

15%

TTI (Time to Interactive)

Value24.8 s

0/100

10%

Network Requests Diagram

vactec.en.alibaba.com

79 ms

vactec.en.alibaba.com

363 ms

67 ms

98 ms

header.css

106 ms

Our browser made a total of 105 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Vactec.en.alibaba.com, 46% (48 requests) were made to S.alicdn.com and 11% (12 requests) were made to Sc02.alicdn.com. The less responsive or slowest element that took the longest time to load (3.7 sec) relates to the external source S.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.2 MB (60%)

Content Size

3.6 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vactec.en.alibaba.com main page is 3.6 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. 70% of websites need less resources to load. Javascripts take 2.6 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 502.2 kB

  • Original 606.1 kB
  • After minification 602.2 kB
  • After compression 103.9 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 502.2 kB or 83% 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, Vactec 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

-52%

Potential reduce by 1.4 MB

  • Original 2.6 MB
  • After minification 2.6 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 1.4 MB or 52% of the original size.

CSS Optimization

-88%

Potential reduce by 294.6 kB

  • Original 334.2 kB
  • After minification 283.4 kB
  • After compression 39.7 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. Vactec.en.alibaba.com needs all CSS files to be minified and compressed as it can save up to 294.6 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 49 (52%)

Requests Now

94

After Optimization

45

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 94 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vactec 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

vactec.en.alibaba.com

vactec.en.alibaba.com

79 ms

vactec.en.alibaba.com

vactec.en.alibaba.com

363 ms

67 ms

98 ms

header.css

header.css

106 ms

header.js

header.js

210 ms

116 ms

web-index.css

web-index.css

115 ms

web-index.css

web-index.css

115 ms

web-index.css

web-index.css

174 ms

web-index.css

web-index.css

131 ms

web-index.css

web-index.css

176 ms

482 ms

169 ms

index.js

index.js

172 ms

332 ms

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1127 ms

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758 ms

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414 ms

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721 ms

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617 ms

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397 ms

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395 ms

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667 ms

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703 ms

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820 ms

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427 ms

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554 ms

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728 ms

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738 ms

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734 ms

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917 ms

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903 ms

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961 ms

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820 ms

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1073 ms

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609 ms

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615 ms

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954 ms

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817 ms

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666 ms

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818 ms

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926 ms

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1085 ms

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1339 ms

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819 ms

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1338 ms

awsc.js

awsc.js

383 ms

207 ms

171 ms

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432 ms

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436 ms

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3683 ms

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823 ms

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840 ms

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1048 ms

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1043 ms

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1013 ms

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1309 ms

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1232 ms

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1359 ms

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1492 ms

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1842 ms

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1842 ms

roboto-regular.woff

roboto-regular.woff

1311 ms

roboto-medium.woff

roboto-medium.woff

1322 ms

roboto-light.woff

roboto-light.woff

1333 ms

roboto-thin.woff

roboto-thin.woff

1334 ms

roboto-bold.woff

roboto-bold.woff

1346 ms

personTipsInfo.do

personTipsInfo.do

251 ms

eg.js

eg.js

163 ms

icon-font.woff

icon-font.woff

1204 ms

font_515771_xjdbujl2iu.woff

font_515771_xjdbujl2iu.woff

277 ms

sc.globalxman.appscene

sc.globalxman.appscene

74 ms

footer.css

footer.css

1103 ms

et_n.js

et_n.js

15 ms

um.js

um.js

128 ms

sc.sc_header_footer.sc_hds

sc.sc_header_footer.sc_hds

53 ms

index.js

index.js

44 ms

index.js

index.js

44 ms

7.gif

7.gif

54 ms

wu.json

wu.json

29 ms

baxiaCommon.js

baxiaCommon.js

15 ms

rp

rp

1305 ms

um.json

um.json

58 ms

getUmid.do

getUmid.do

29 ms

light0.5x.png

light0.5x.png

41 ms

pages_version.html

pages_version.html

58 ms

sc.sc_header_footer.schd_coms

sc.sc_header_footer.schd_coms

20 ms

defer-common.js

defer-common.js

104 ms

i.alicdn.com

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102 ms

index.js

index.js

17 ms

need_show_cookie_setting.do

need_show_cookie_setting.do

34 ms

index.web.css

index.web.css

29 ms

index.web.js

index.web.js

216 ms

index.js

index.js

176 ms

store-proxy.html

store-proxy.html

137 ms

countryCurrencyDataService

countryCurrencyDataService

271 ms

sc.sc_header_footer.sc_hds

sc.sc_header_footer.sc_hds

116 ms

personRoleInfo.do

personRoleInfo.do

249 ms

notification.do

notification.do

272 ms

availableSurveyQuery.json

availableSurveyQuery.json

66 ms

iconfont.woff

iconfont.woff

7 ms

iconfont.woff

iconfont.woff

18 ms

data

data

6 ms

Accessibility Review

vactec.en.alibaba.com accessibility score

69

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

vactec.en.alibaba.com best practices score

83

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

SEO Factors

vactec.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 Vactec.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 Vactec.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

vactec.en.alibaba.com

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