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

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

vistronaudio.en.alibaba.com

Company Overview - Vistron(Dong Guan) Audio Equipment Co., Ltd.

Page Load Speed

6.9 sec in total

First Response

1.7 sec

Resources Loaded

4.5 sec

Page Rendered

669 ms

vistronaudio.en.alibaba.com screenshot

About Website

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

Vistron(Dong Guan) Audio Equipment Co., Ltd. Products:Amplifier,Bluetooth Speaker,CD Player,Subwoofer Speaker,Bookshelf speaker

Visit vistronaudio.en.alibaba.com

Key Findings

We analyzed Vistronaudio.en.alibaba.com page load time and found that the first response time was 1.7 sec and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

vistronaudio.en.alibaba.com performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

54/100

10%

LCP (Largest Contentful Paint)

Value8.4 s

2/100

25%

SI (Speed Index)

Value13.2 s

2/100

10%

TBT (Total Blocking Time)

Value3,630 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.023

100/100

15%

TTI (Time to Interactive)

Value23.3 s

1/100

10%

Network Requests Diagram

vistronaudio.en.alibaba.com

1652 ms

vistronaudio.en.alibaba.com

330 ms

27 ms

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

37 ms

O1CN01Xt4rje1w9QKVzNB6S_!!6000000006265-2-tps-3084-90.png

86 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 3% of them (3 requests) were addressed to the original Vistronaudio.en.alibaba.com, 35% (31 requests) were made to Img.alicdn.com and 24% (21 requests) were made to Sc04.alicdn.com. The less responsive or slowest element that took the longest time to load (2.5 sec) relates to the external source Sc04.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 882.6 kB (42%)

Content Size

2.1 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Vistronaudio.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. 45% of websites need less resources to load. Javascripts take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 565.9 kB

  • Original 680.4 kB
  • After minification 679.5 kB
  • After compression 114.5 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 565.9 kB or 83% of the original size.

Image Optimization

-9%

Potential reduce by 16.5 kB

  • Original 186.1 kB
  • After minification 169.6 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. Vistron Audio En Alibaba images are well optimized though.

JavaScript Optimization

-25%

Potential reduce by 300.2 kB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 920.0 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 300.2 kB or 25% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (37%)

Requests Now

87

After Optimization

55

  • AJAX
  • Images
  • JavaScript

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vistron Audio 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

vistronaudio.en.alibaba.com

vistronaudio.en.alibaba.com

1652 ms

vistronaudio.en.alibaba.com

vistronaudio.en.alibaba.com

330 ms

27 ms

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

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

37 ms

O1CN01Xt4rje1w9QKVzNB6S_!!6000000006265-2-tps-3084-90.png

O1CN01Xt4rje1w9QKVzNB6S_!!6000000006265-2-tps-3084-90.png

86 ms

index.js

index.js

84 ms

index.js

index.js

42 ms

renderHeader.js

renderHeader.js

64 ms

awsc.js

awsc.js

44 ms

7 ms

7.gif

7.gif

23 ms

et_n.js

et_n.js

13 ms

um.js

um.js

12 ms

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

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

58 ms

A517a2e2a08a84cb3b7b62784bc06febaa.jpg

A517a2e2a08a84cb3b7b62784bc06febaa.jpg

568 ms

O1CN01sm8LfF1dQqLuZy78w_!!800803731.png

O1CN01sm8LfF1dQqLuZy78w_!!800803731.png

50 ms

Factory-Sale-Professional-Active-Studio-Monitor-Speaker.jpg_350x350.jpg

Factory-Sale-Professional-Active-Studio-Monitor-Speaker.jpg_350x350.jpg

371 ms

vistronaudio.en.alibaba.com

vistronaudio.en.alibaba.com

272 ms

O1CN018jRfTg1dQqM221P7Y_!!800803731.png

O1CN018jRfTg1dQqM221P7Y_!!800803731.png

90 ms

TB24Yk0n67nBKNjSZLeXXbxCFXa_!!800803731.png

TB24Yk0n67nBKNjSZLeXXbxCFXa_!!800803731.png

94 ms

TB2Gpp_DYSYBuNjSspfXXcZCpXa-800803731.png

TB2Gpp_DYSYBuNjSspfXXcZCpXa-800803731.png

97 ms

TB2aMNRD7OWBuNjSsppXXXPgpXa-800803731.png

TB2aMNRD7OWBuNjSsppXXXPgpXa-800803731.png

100 ms

TB2SL4MDY1YBuNjSszhXXcUsFXa-800803731.png

TB2SL4MDY1YBuNjSszhXXcUsFXa-800803731.png

98 ms

TB2XOFeD1OSBuNjy0FdXXbDnVXa-800803731.png

TB2XOFeD1OSBuNjy0FdXXbDnVXa-800803731.png

98 ms

TB2Pc85D9BYBeNjy0FeXXbnmFXa-800803731.png

TB2Pc85D9BYBeNjy0FeXXbnmFXa-800803731.png

100 ms

TB29HyVD21TBuNjy0FjXXajyXXa-800803731.png

TB29HyVD21TBuNjy0FjXXajyXXa-800803731.png

98 ms

TB2wFtrD1SSBuNjy0FlXXbBpVXa-800803731.png

TB2wFtrD1SSBuNjy0FlXXbBpVXa-800803731.png

102 ms

TB2_sn3D_JYBeNjy1zeXXahzVXa-800803731.png

TB2_sn3D_JYBeNjy1zeXXahzVXa-800803731.png

102 ms

TB2EaNvDYSYBuNjSspiXXXNzpXa-800803731.png

TB2EaNvDYSYBuNjSspiXXXNzpXa-800803731.png

104 ms

TB2RV8pDY5YBuNjSspoXXbeNFXa-800803731.png

TB2RV8pDY5YBuNjSspoXXbeNFXa-800803731.png

103 ms

TB2Zy3IvvuSBuNkHFqDXXXfhVXa-800803731.png

TB2Zy3IvvuSBuNkHFqDXXXfhVXa-800803731.png

104 ms

TB29V8pDY5YBuNjSspoXXbeNFXa-800803731.png

TB29V8pDY5YBuNjSspoXXbeNFXa-800803731.png

107 ms

TB2aV90D9tYBeNjSspkXXbU8VXa-800803731.png

TB2aV90D9tYBeNjSspkXXbU8VXa-800803731.png

105 ms

TB2OXXoD1uSBuNjy1XcXXcYjFXa-800803731.png

TB2OXXoD1uSBuNjy1XcXXcYjFXa-800803731.png

106 ms

TB2ra0bDVuWBuNjSszbXXcS7FXa-800803731.png

TB2ra0bDVuWBuNjSszbXXcS7FXa-800803731.png

106 ms

TB2bp0PD1uSBuNjSsziXXbq8pXa-800803731.png

TB2bp0PD1uSBuNjSsziXXbq8pXa-800803731.png

108 ms

O1CN01GToSLC1dQqFwsHSCk_!!800803731.png

O1CN01GToSLC1dQqFwsHSCk_!!800803731.png

106 ms

O1CN01pUsUkE1dQqKyCgnLZ_!!800803731.png

O1CN01pUsUkE1dQqKyCgnLZ_!!800803731.png

108 ms

O1CN01DRYFiR1dQqKymY5Jz_!!800803731.png

O1CN01DRYFiR1dQqKymY5Jz_!!800803731.png

109 ms

O1CN01o1xG3S1dQqGgIZUAu_!!800803731.png

O1CN01o1xG3S1dQqGgIZUAu_!!800803731.png

507 ms

O1CN01LXdgH71dQqGbWGf1n_!!800803731.png

O1CN01LXdgH71dQqGbWGf1n_!!800803731.png

543 ms

O1CN011iTz6M1dQqWv1TIBM_!!800803731.png

O1CN011iTz6M1dQqWv1TIBM_!!800803731.png

441 ms

O1CN01VcJOIA1dQqX1SUT9E_!!800803731.png

O1CN01VcJOIA1dQqX1SUT9E_!!800803731.png

500 ms

O1CN01Dxf0Dn1dQqWv1UZAR_!!800803731.png

O1CN01Dxf0Dn1dQqWv1UZAR_!!800803731.png

654 ms

O1CN01VlIZlE1dQqWxiEfSD_!!800803731.png

O1CN01VlIZlE1dQqWxiEfSD_!!800803731.png

509 ms

O1CN01C9UNjw1dQqGjeT2oY_!!800803731.jpg

O1CN01C9UNjw1dQqGjeT2oY_!!800803731.jpg

723 ms

O1CN01B6Eztq1dQqGeTKQ2L_!!800803731.jpg

O1CN01B6Eztq1dQqGeTKQ2L_!!800803731.jpg

814 ms

Class-D-Plate-Amplifier-Module-For-Powered.jpg_350x350.jpg

Class-D-Plate-Amplifier-Module-For-Powered.jpg_350x350.jpg

665 ms

High-Power-Class-D-Output-300W-500W.jpg_350x350.jpg

High-Power-Class-D-Output-300W-500W.jpg_350x350.jpg

768 ms

HiFi-Mini-Wireless-Smart-Class-D-Stereo.jpg_350x350.jpg

HiFi-Mini-Wireless-Smart-Class-D-Stereo.jpg_350x350.jpg

653 ms

Retro-Portable-Bluetooth-Speaker-with-Vintage-Wooden.jpg_350x350.jpg

Retro-Portable-Bluetooth-Speaker-with-Vintage-Wooden.jpg_350x350.jpg

712 ms

Active-Powered-Bluetooth-Bookshelf-Speakers-for-Studio.jpg_350x350.jpg

Active-Powered-Bluetooth-Bookshelf-Speakers-for-Studio.jpg_350x350.jpg

782 ms

HiFi-Desktop-Bookshelf-Speakers-Pair-Powered-Bluetooth.jpg_350x350.jpg

HiFi-Desktop-Bookshelf-Speakers-Pair-Powered-Bluetooth.jpg_350x350.jpg

758 ms

5-25-Inch-2-Way-HiFi-Bookshelf.jpg_350x350.jpg

5-25-Inch-2-Way-HiFi-Bookshelf.jpg_350x350.jpg

1333 ms

Long-Range-5-8G-Wireless-Audio-Transmitter.jpg_350x350.jpg

Long-Range-5-8G-Wireless-Audio-Transmitter.jpg_350x350.jpg

1260 ms

Home-And-Studio-HiFi-Monitor-Loudspeakers-With.jpg_640x640.jpg

Home-And-Studio-HiFi-Monitor-Loudspeakers-With.jpg_640x640.jpg

1183 ms

OEM-ODM-Wireless-Home-Audio-Amplifier-HiFi.jpg_640x640.jpg

OEM-ODM-Wireless-Home-Audio-Amplifier-HiFi.jpg_640x640.jpg

1161 ms

Home-Audio-Subwoofer-Amplifier-With-Hign-End.jpg_640x640.jpg

Home-Audio-Subwoofer-Amplifier-With-Hign-End.jpg_640x640.jpg

1639 ms

4-1-Channel-Mini-Hi-Fi-Class.jpg_640x640.jpg

4-1-Channel-Mini-Hi-Fi-Class.jpg_640x640.jpg

1501 ms

High-quality-home-theater-speaker-5-0.jpg_640x640.jpg

High-quality-home-theater-speaker-5-0.jpg_640x640.jpg

1599 ms

Factory-Portable-Multi-Color-Wireless-Subwoofer-Home.jpg_640x640.jpg

Factory-Portable-Multi-Color-Wireless-Subwoofer-Home.jpg_640x640.jpg

1509 ms

VISTRON-High-Quality-desktop-Subwoofer-TWS-HiFi.jpg_640x640.jpg

VISTRON-High-Quality-desktop-Subwoofer-TWS-HiFi.jpg_640x640.jpg

1736 ms

2024-New-80W-Outdoor-or-Home-Multiroom.jpg_640x640.jpg

2024-New-80W-Outdoor-or-Home-Multiroom.jpg_640x640.jpg

1721 ms

High-Sound-Quality-Professional-Active-Portable-Studio.jpg_640x640.jpg

High-Sound-Quality-Professional-Active-Portable-Studio.jpg_640x640.jpg

2495 ms

Bluetooth-5-0-Amplifier-Receiver-50W-x.jpg_640x640.jpg

Bluetooth-5-0-Amplifier-Receiver-50W-x.jpg_640x640.jpg

2118 ms

SUB-12-High-power-500W-Subwoofer-Home.jpg_350x350.jpg

SUB-12-High-power-500W-Subwoofer-Home.jpg_350x350.jpg

2180 ms

wholesale-CD-Player-Portable-Bluetooth-Desktop-CD.jpg_350x350.jpg

wholesale-CD-Player-Portable-Bluetooth-Desktop-CD.jpg_350x350.jpg

2480 ms

A1cde9942a90b48c99517076d6c61c7d0t.jpg

A1cde9942a90b48c99517076d6c61c7d0t.jpg

1189 ms

H87c53265c8d94f1d8fff0074c912e0b4p.jpg

H87c53265c8d94f1d8fff0074c912e0b4p.jpg

797 ms

Hd28ad62c5ccf4f3aac3d142f4e32c5f24.png

Hd28ad62c5ccf4f3aac3d142f4e32c5f24.png

515 ms

H284bd38fe5cb4682821162a1699aeef2X.png

H284bd38fe5cb4682821162a1699aeef2X.png

829 ms

He1bd00cd8266487b8cb7a9822c5a2f1d2.png

He1bd00cd8266487b8cb7a9822c5a2f1d2.png

828 ms

He3e6d676ebc249939bb755871c13ff49Z.png

He3e6d676ebc249939bb755871c13ff49Z.png

866 ms

H2f7e1d2ad5b049ccb42d5b986fd61a29t.png

H2f7e1d2ad5b049ccb42d5b986fd61a29t.png

1033 ms

H49e8820aae194f3ba5e425cc1f14e619g.png

H49e8820aae194f3ba5e425cc1f14e619g.png

1418 ms

Af9ac2c7ba00441ba8ef9dab4b7473976r.jpg

Af9ac2c7ba00441ba8ef9dab4b7473976r.jpg

1338 ms

H4410fc773f8d4655b31a988fde59e8b56.png

H4410fc773f8d4655b31a988fde59e8b56.png

1459 ms

Ac07bab77a23e42a6b19c7e73a7f6e7922.jpg

Ac07bab77a23e42a6b19c7e73a7f6e7922.jpg

1581 ms

Acb16d7ef5e474e2784a3f8f5f9409402p.jpg

Acb16d7ef5e474e2784a3f8f5f9409402p.jpg

1364 ms

Aff94301761db403298b9485681291b95V.jpg

Aff94301761db403298b9485681291b95V.jpg

1591 ms

H6284c3b46fce4e529510a487d049f052O.png

H6284c3b46fce4e529510a487d049f052O.png

1633 ms

H6bab106ab94f40c7a41100aeac86b7a7J.jpg

H6bab106ab94f40c7a41100aeac86b7a7J.jpg

2483 ms

H0a62aeaa97b84132be62a5d53b8d558f0.png

H0a62aeaa97b84132be62a5d53b8d558f0.png

2086 ms

H77873848301e441ab754281af59942733.png

H77873848301e441ab754281af59942733.png

1627 ms

wu.json

wu.json

527 ms

um.json

um.json

53 ms

getUmid.do

getUmid.do

62 ms

eg.js

eg.js

2 ms

index.js

index.js

27 ms

Accessibility Review

vistronaudio.en.alibaba.com accessibility score

73

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

vistronaudio.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

vistronaudio.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 Vistronaudio.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 Vistronaudio.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

vistronaudio.en.alibaba.com

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