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

Report Summary

  • 34

    Performance

    Renders faster than
    54% 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

  • 86

    SEO

    Google-friendlier than
    60% of websites

onvcom.en.alibaba.com

Company Overview - Optical Network Video Technologies (Shenzhen) Co., Ltd.

Page Load Speed

3.7 sec in total

First Response

380 ms

Resources Loaded

3.2 sec

Page Rendered

116 ms

onvcom.en.alibaba.com screenshot

About Website

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

Optical Network Video Technologies (Shenzhen) Co., Ltd. Products:PoE Switch,Industrial PoE Switch,Ethernet Switch,Network Switch,PoE Injector

Visit onvcom.en.alibaba.com

Key Findings

We analyzed Onvcom.en.alibaba.com page load time and found that the first response time was 380 ms and then it took 3.3 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

onvcom.en.alibaba.com performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

76/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

46/100

25%

SI (Speed Index)

Value13.1 s

2/100

10%

TBT (Total Blocking Time)

Value7,090 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.019

100/100

15%

TTI (Time to Interactive)

Value24.6 s

0/100

10%

Network Requests Diagram

onvcom.en.alibaba.com

380 ms

onvcom.en.alibaba.com

251 ms

34 ms

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

48 ms

index.js

147 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original Onvcom.en.alibaba.com, 29% (12 requests) were made to Sc01.alicdn.com and 24% (10 requests) were made to S.alicdn.com. The less responsive or slowest element that took the longest time to load (2.7 sec) relates to the external source S.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 907.2 kB (48%)

Content Size

1.9 MB

After Optimization

974.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Onvcom.en.alibaba.com main page is 1.9 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. 35% of websites need less resources to load. Javascripts take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 364.3 kB

  • Original 447.9 kB
  • After minification 447.2 kB
  • After compression 83.6 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 364.3 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 5.8 kB
  • After minification 5.8 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. Onv Co M En Alibaba images are well optimized though.

JavaScript Optimization

-38%

Potential reduce by 542.9 kB

  • Original 1.4 MB
  • After minification 1.4 MB
  • After compression 885.2 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 542.9 kB or 38% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (28%)

Requests Now

39

After Optimization

28

  • AJAX
  • Images
  • JavaScript

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Onv Co M 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

onvcom.en.alibaba.com

onvcom.en.alibaba.com

380 ms

onvcom.en.alibaba.com

onvcom.en.alibaba.com

251 ms

34 ms

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

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

48 ms

index.js

index.js

147 ms

index.js

index.js

68 ms

renderHeader.js

renderHeader.js

72 ms

H91b46ec5c6824a0bb5f3a938b4dc0dcc8.jpg

H91b46ec5c6824a0bb5f3a938b4dc0dcc8.jpg

715 ms

H9f9c41eeb7da418f8869530d21e4447bV.jpg

H9f9c41eeb7da418f8869530d21e4447bV.jpg

823 ms

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H0c46ef2228e840eaac18c07930d04742v.jpg

2669 ms

awsc.js

awsc.js

39 ms

9 ms

7.gif

7.gif

81 ms

et_n.js

et_n.js

9 ms

um.js

um.js

69 ms

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H72858e7f1b104ce2b334a7751e7b928aV.jpg

366 ms

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487 ms

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357 ms

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329 ms

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437 ms

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HTB1H4JeXOLxK1Rjy0Ffq6zYdVXaX.jpg

599 ms

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HTB1C5lgXNrvK1RjSszeq6yObFXav.jpg

482 ms

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HTB1uppeXOnrK1Rjy1Xcq6yeDVXai.jpg

1230 ms

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618 ms

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HTB1JJu4lZbpK1RjSZFyq6x_qFXaP.jpg

738 ms

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855 ms

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2091 ms

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1587 ms

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

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

40 ms

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729 ms

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500 ms

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599 ms

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314 ms

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HTB1uVpeXOnrK1Rjy1Xcq6yeDVXaN.jpg

554 ms

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HTB1D5lgXNrvK1RjSszeq6yObFXaw.jpg

317 ms

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HTB11ohfXITxK1Rjy0Fgq6yovpXaW.jpg

469 ms

wu.json

wu.json

185 ms

um.json

um.json

51 ms

getUmid.do

getUmid.do

21 ms

eg.js

eg.js

3 ms

index.js

index.js

2 ms

Accessibility Review

onvcom.en.alibaba.com accessibility score

70

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

onvcom.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

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

SEO Factors

onvcom.en.alibaba.com SEO score

86

Search Engine Optimization Advices

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 Onvcom.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 Onvcom.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

onvcom.en.alibaba.com

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