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

Report Summary

  • 28

    Performance

    Renders faster than
    47% 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

wolckdata.en.alibaba.com

Company Overview - SHENZHEN WOLCK NETWORK PRODUCT CO.,LIMITED

Page Load Speed

3.2 sec in total

First Response

350 ms

Resources Loaded

2.4 sec

Page Rendered

405 ms

wolckdata.en.alibaba.com screenshot

About Website

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

SHENZHEN WOLCK NETWORK PRODUCT CO.,LIMITED Products:Optical Transmitter,EDFA,OLT,ONU,Optical Receiver

Visit wolckdata.en.alibaba.com

Key Findings

We analyzed Wolckdata.en.alibaba.com page load time and found that the first response time was 350 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

wolckdata.en.alibaba.com performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

75/100

10%

LCP (Largest Contentful Paint)

Value6.4 s

9/100

25%

SI (Speed Index)

Value7.2 s

30/100

10%

TBT (Total Blocking Time)

Value3,900 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.032

100/100

15%

TTI (Time to Interactive)

Value25.1 s

0/100

10%

Network Requests Diagram

wolckdata.en.alibaba.com

350 ms

wolckdata.en.alibaba.com

265 ms

40 ms

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

134 ms

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

196 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Wolckdata.en.alibaba.com, 34% (22 requests) were made to Sc02.alicdn.com and 27% (17 requests) were made to Img.alicdn.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Sc02.alicdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 581.0 kB (35%)

Content Size

1.7 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Wolckdata.en.alibaba.com main page is 1.7 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. 40% of websites need less resources to load. Javascripts take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 350.3 kB

  • Original 434.2 kB
  • After minification 433.4 kB
  • After compression 83.9 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 350.3 kB or 81% of the original size.

Image Optimization

-10%

Potential reduce by 9.0 kB

  • Original 87.4 kB
  • After minification 78.4 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. WOLCK Data En Alibaba images are well optimized though.

JavaScript Optimization

-19%

Potential reduce by 221.7 kB

  • Original 1.1 MB
  • After minification 1.1 MB
  • After compression 927.0 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 221.7 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (50%)

Requests Now

62

After Optimization

31

  • AJAX
  • Images
  • JavaScript

The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of WOLCK Data 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

wolckdata.en.alibaba.com

wolckdata.en.alibaba.com

350 ms

wolckdata.en.alibaba.com

wolckdata.en.alibaba.com

265 ms

40 ms

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

134 ms

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196 ms

index.js

index.js

374 ms

index.js

index.js

175 ms

renderHeader.js

renderHeader.js

346 ms

awsc.js

awsc.js

128 ms

20 ms

m.i.c

m.i.c

309 ms

7.gif

7.gif

303 ms

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361 ms

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533 ms

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290 ms

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401 ms

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53 ms

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224 ms

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224 ms

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258 ms

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430 ms

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517 ms

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459 ms

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623 ms

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606 ms

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750 ms

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771 ms

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844 ms

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990 ms

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957 ms

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1030 ms

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1189 ms

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1164 ms

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1299 ms

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1394 ms

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1407 ms

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366 ms

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351 ms

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834 ms

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518 ms

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434 ms

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561 ms

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631 ms

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908 ms

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492 ms

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640 ms

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1020 ms

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567 ms

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1108 ms

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975 ms

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1143 ms

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1135 ms

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1475 ms

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1322 ms

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1322 ms

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1534 ms

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1794 ms

et_n.js

et_n.js

26 ms

um.js

um.js

179 ms

wu.json

wu.json

407 ms

um.json

um.json

53 ms

getUmid.do

getUmid.do

42 ms

eg.js

eg.js

2 ms

index.js

index.js

10 ms

Accessibility Review

wolckdata.en.alibaba.com accessibility score

70

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

wolckdata.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

wolckdata.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 Wolckdata.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 Wolckdata.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

wolckdata.en.alibaba.com

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