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

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

onv.en.alibaba.com

Optical Network Video Technologies (shenzhen) Co., Ltd. - PoE Switch, Industrial PoE Switch

Page Load Speed

5.1 sec in total

First Response

82 ms

Resources Loaded

4.3 sec

Page Rendered

691 ms

onv.en.alibaba.com screenshot

About Website

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

Optical Network Video Technologies (shenzhen) Co., Ltd., Experts in Manufacturing and Exporting PoE Switch, Industrial PoE Switch and 0 more Products.

Visit onv.en.alibaba.com

Key Findings

We analyzed Onv.en.alibaba.com page load time and found that the first response time was 82 ms and then it took 5 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

onv.en.alibaba.com performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value15.4 s

1/100

10%

TBT (Total Blocking Time)

Value8,020 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.672

8/100

15%

TTI (Time to Interactive)

Value27.6 s

0/100

10%

Network Requests Diagram

onv.en.alibaba.com

82 ms

onv.en.alibaba.com

954 ms

134 ms

128 ms

header.css

185 ms

Our browser made a total of 130 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Onv.en.alibaba.com, 65% (85 requests) were made to S.alicdn.com and 5% (7 requests) were made to Gj.mmstat.com. The less responsive or slowest element that took the longest time to load (2.4 sec) relates to the external source S.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.0 MB (56%)

Content Size

3.5 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Onv.en.alibaba.com main page is 3.5 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 2.2 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 825.7 kB

  • Original 972.7 kB
  • After minification 968.8 kB
  • After compression 147.0 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 825.7 kB or 85% of the original size.

Image Optimization

-7%

Potential reduce by 8.9 kB

  • Original 119.5 kB
  • After minification 110.7 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 En Alibaba images are well optimized though.

JavaScript Optimization

-43%

Potential reduce by 950.2 kB

  • Original 2.2 MB
  • After minification 2.2 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 950.2 kB or 43% of the original size.

CSS Optimization

-85%

Potential reduce by 213.1 kB

  • Original 250.8 kB
  • After minification 199.9 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. Onv.en.alibaba.com needs all CSS files to be minified and compressed as it can save up to 213.1 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 58 (49%)

Requests Now

119

After Optimization

61

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 119 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Onv 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

onv.en.alibaba.com

onv.en.alibaba.com

82 ms

onv.en.alibaba.com

onv.en.alibaba.com

954 ms

134 ms

128 ms

header.css

header.css

185 ms

header.js

header.js

252 ms

38 ms

web-index.css

web-index.css

131 ms

web-index.css

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132 ms

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web-index.css

184 ms

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202 ms

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201 ms

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251 ms

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235 ms

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236 ms

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697 ms

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1058 ms

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289 ms

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287 ms

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289 ms

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579 ms

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574 ms

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392 ms

173 ms

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516 ms

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702 ms

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990 ms

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898 ms

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1083 ms

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1290 ms

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1176 ms

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484 ms

personTipsInfo.do

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165 ms

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316 ms

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434 ms

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435 ms

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1090 ms

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609 ms

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38 ms

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1223 ms

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um.json

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getUmid.do

getUmid.do

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177 ms

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42 ms

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511 ms

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508 ms

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132 ms

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Accessibility Review

onv.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

onv.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

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

onv.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 Onv.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 Onv.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

onv.en.alibaba.com

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