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

Report Summary

  • 17

    Performance

    Renders faster than
    32% 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

  • 79

    SEO

    Google-friendlier than
    40% of websites

onv.en.alibaba.com

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

Page Load Speed

3.7 sec in total

First Response

499 ms

Resources Loaded

2.7 sec

Page Rendered

520 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. Products:PoE Switch, Industrial PoE Switch, IoT Intelligent Box, Optical Media Converter, Power Supply

Visit onv.en.alibaba.com

Key Findings

We analyzed Onv.en.alibaba.com page load time and found that the first response time was 499 ms and then it took 3.2 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

onv.en.alibaba.com performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value15.7 s

0/100

10%

TBT (Total Blocking Time)

Value9,040 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.177

68/100

15%

TTI (Time to Interactive)

Value29.3 s

0/100

10%

Network Requests Diagram

onv.en.alibaba.com

499 ms

onv.en.alibaba.com

372 ms

42 ms

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

50 ms

index.js

95 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 4% of them (2 requests) were addressed to the original Onv.en.alibaba.com, 61% (31 requests) were made to S.alicdn.com and 8% (4 requests) were made to Sc04.alicdn.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source S.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (55%)

Content Size

2.3 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Onv.en.alibaba.com main page is 2.3 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 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 728.1 kB

  • Original 855.3 kB
  • After minification 854.5 kB
  • After compression 127.2 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 728.1 kB or 85% of the original size.

Image Optimization

-0%

Potential reduce by 7 B

  • Original 8.7 kB
  • After minification 8.7 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

-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 26 (53%)

Requests Now

49

After Optimization

23

  • AJAX
  • Images
  • JavaScript

The browser has sent 49 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 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

onv.en.alibaba.com

onv.en.alibaba.com

499 ms

onv.en.alibaba.com

onv.en.alibaba.com

372 ms

42 ms

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

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

50 ms

index.js

index.js

95 ms

index.js

index.js

49 ms

renderHeader.js

renderHeader.js

50 ms

H1b3cf37dee584e32891e6a0cd7623aefN.jpg

H1b3cf37dee584e32891e6a0cd7623aefN.jpg

96 ms

H1979fbe2d17d488e959f934a0c150a7eK.jpg

H1979fbe2d17d488e959f934a0c150a7eK.jpg

1092 ms

H0d9eda8ec0424b1fb1a79520b5379325I.jpg

H0d9eda8ec0424b1fb1a79520b5379325I.jpg

915 ms

awsc.js

awsc.js

46 ms

11 ms

7.gif

7.gif

264 ms

et_n.js

et_n.js

6 ms

um.js

um.js

79 ms

wu.json

wu.json

721 ms

HTB1jGzBjBHH8KJjy0Fbq6AqlpXaM.jpg

HTB1jGzBjBHH8KJjy0Fbq6AqlpXaM.jpg

585 ms

TB1Ay1AVUz1gK0jSZLeXXb9kVXa-196-80.png

TB1Ay1AVUz1gK0jSZLeXXb9kVXa-196-80.png

34 ms

HTB1bDx6jwDD8KJjy0Fdq6AjvXXaN.jpg

HTB1bDx6jwDD8KJjy0Fdq6AjvXXaN.jpg

200 ms

H068bc018e144426b8614881afb58fc94R.jpg

H068bc018e144426b8614881afb58fc94R.jpg

123 ms

Hce5c42612e464de3807b47e878eb2d9du.png_100x100.png

Hce5c42612e464de3807b47e878eb2d9du.png_100x100.png

252 ms

H4a065797e2c34dd0afdaa24bce9ae4ab7.jpg_100x100.jpg

H4a065797e2c34dd0afdaa24bce9ae4ab7.jpg_100x100.jpg

250 ms

H5d22c75d0ad649539f72d3153d1c1e67B.jpeg_100x100.jpeg

H5d22c75d0ad649539f72d3153d1c1e67B.jpeg_100x100.jpeg

251 ms

H22b19388652b4a57ba374369b3b680dc0.png_100x100.png

H22b19388652b4a57ba374369b3b680dc0.png_100x100.png

251 ms

DC12-57V-L2-managed-Fiber-Switch-Industrial.jpg_350x350.jpg

DC12-57V-L2-managed-Fiber-Switch-Industrial.jpg_350x350.jpg

347 ms

ONV-New-type-IPS53064FGM-5Port-Gigabit-RJ45.jpg_350x350.jpg

ONV-New-type-IPS53064FGM-5Port-Gigabit-RJ45.jpg_350x350.jpg

307 ms

TB1Gvmpg7P2gK0jSZPxXXacQpXa-1200-230.jpg

TB1Gvmpg7P2gK0jSZPxXXacQpXa-1200-230.jpg

250 ms

Original-Brand-6-port-10-100M-Smart.jpg_480x480.jpg

Original-Brand-6-port-10-100M-Smart.jpg_480x480.jpg

643 ms

Nice-price-over-ethernet-industrial-4-port.jpg_480x480.jpg

Nice-price-over-ethernet-industrial-4-port.jpg_480x480.jpg

575 ms

2-Port-Gigabit-PoE-Injector-with-Single.jpg_480x480.jpg

2-Port-Gigabit-PoE-Injector-with-Single.jpg_480x480.jpg

809 ms

High-performance-12-port-2-5G-Managed.jpg_480x480.jpg

High-performance-12-port-2-5G-Managed.jpg_480x480.jpg

787 ms

10-port-Full-Gigabit-Ethernet-Fiber-Switch.jpg_480x480.jpg

10-port-Full-Gigabit-Ethernet-Fiber-Switch.jpg_480x480.jpg

1152 ms

Factory-OEM-ODM-3-port-Full-Gigabit.jpg_480x480.jpg

Factory-OEM-ODM-3-port-Full-Gigabit.jpg_480x480.jpg

935 ms

ONV-Original-Factory-Special-Offer-12V-fast.jpg_480x480.jpg

ONV-Original-Factory-Special-Offer-12V-fast.jpg_480x480.jpg

999 ms

CE-FCC-ROHS-certificated-DIN-RAIL-power.jpg_480x480.jpg

CE-FCC-ROHS-certificated-DIN-RAIL-power.jpg_480x480.jpg

1036 ms

16-port-Full-Gigabit-Managed-PoE-Switch.jpg_480x480.jpg

16-port-Full-Gigabit-Managed-PoE-Switch.jpg_480x480.jpg

1030 ms

Cheaper-Price-10-100-1000M-10-port.jpg_480x480.jpg

Cheaper-Price-10-100-1000M-10-port.jpg_480x480.jpg

1180 ms

100-Original-6-port-10-100M-Smart.jpg_480x480.jpg

100-Original-6-port-10-100M-Smart.jpg_480x480.jpg

1260 ms

High-Performance-24-Port-Gigabit-Web-Network.jpg_480x480.jpg

High-Performance-24-Port-Gigabit-Web-Network.jpg_480x480.jpg

1797 ms

ONV-Hot-Selling-10-100-1000M-8.jpg_480x480.jpg

ONV-Hot-Selling-10-100-1000M-8.jpg_480x480.jpg

1301 ms

ONV-8-port-10-100Mbps-PoE-Switch.jpg_480x480.jpg

ONV-8-port-10-100Mbps-PoE-Switch.jpg_480x480.jpg

1314 ms

12-port-10-100M-unmanaged-PoE-Switch.jpg_480x480.jpg

12-port-10-100M-unmanaged-PoE-Switch.jpg_480x480.jpg

1542 ms

6-port-10-100M-unmanaged-PoE-Switch.jpg_480x480.jpg

6-port-10-100M-unmanaged-PoE-Switch.jpg_480x480.jpg

1826 ms

Superior-Quality-5-port-10-100M-Industrial.jpg_480x480.jpg

Superior-Quality-5-port-10-100M-Industrial.jpg_480x480.jpg

1736 ms

Factory-Supply-AI-PoE-Switch-26-port.jpg_480x480.jpg

Factory-Supply-AI-PoE-Switch-26-port.jpg_480x480.jpg

1635 ms

HTB1G5pGkmfD8KJjSszhq6zIJFXau.jpg

HTB1G5pGkmfD8KJjSszhq6zIJFXau.jpg

467 ms

High-Performance-19-port-Gigabit-Uplink-Non.jpg_480x480.jpg

High-Performance-19-port-Gigabit-Uplink-Non.jpg_480x480.jpg

1722 ms

um.json

um.json

54 ms

eg.js

eg.js

2 ms

getUmid.do

getUmid.do

244 ms

index.js

index.js

4 ms

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

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 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: