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

Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

sifier.en.alibaba.com

Company Overview - Shenzhen Sifier Technology Co., Ltd.

Page Load Speed

3.9 sec in total

First Response

605 ms

Resources Loaded

3 sec

Page Rendered

306 ms

sifier.en.alibaba.com screenshot

About Website

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

Shenzhen Sifier Technology Co., Ltd. Products:Sunglasses; Eyeglasses; Reading Glasses; Eyeglasses Accessories

Visit sifier.en.alibaba.com

Key Findings

We analyzed Sifier.en.alibaba.com page load time and found that the first response time was 605 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

sifier.en.alibaba.com performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

61/100

10%

LCP (Largest Contentful Paint)

Value7.6 s

3/100

25%

SI (Speed Index)

Value12.9 s

2/100

10%

TBT (Total Blocking Time)

Value3,350 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.365

29/100

15%

TTI (Time to Interactive)

Value24.2 s

0/100

10%

Network Requests Diagram

sifier.en.alibaba.com

605 ms

sifier.en.alibaba.com

305 ms

21 ms

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

157 ms

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

444 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 6% of them (2 requests) were addressed to the original Sifier.en.alibaba.com, 25% (8 requests) were made to Assets.alicdn.com and 22% (7 requests) were made to S.alicdn.com. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Fourier.taobao.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 783.8 kB (44%)

Content Size

1.8 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Sifier.en.alibaba.com main page is 1.8 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. 50% 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 446.2 kB

  • Original 537.7 kB
  • After minification 537.0 kB
  • After compression 91.5 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 446.2 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 7 B

  • Original 34.7 kB
  • After minification 34.6 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. Sifier En Alibaba images are well optimized though.

JavaScript Optimization

-28%

Potential reduce by 337.6 kB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 888.5 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 337.6 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (47%)

Requests Now

30

After Optimization

16

  • AJAX
  • Images
  • JavaScript

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sifier 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 15 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sifier.en.alibaba.com

sifier.en.alibaba.com

605 ms

sifier.en.alibaba.com

sifier.en.alibaba.com

305 ms

21 ms

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

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

157 ms

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

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

444 ms

234 ms

renderHeader.js

renderHeader.js

400 ms

H14def4fc12d94720b6ba01128d5d54cdW.jpg

H14def4fc12d94720b6ba01128d5d54cdW.jpg

1537 ms

awsc.js

awsc.js

79 ms

7 ms

7.gif

7.gif

390 ms

index.js

index.js

36 ms

index.js

index.js

27 ms

awsc.js

awsc.js

13 ms

baxiaCommon.js

baxiaCommon.js

15 ms

wcfg.json

wcfg.json

1250 ms

rp

rp

1872 ms

et_n.js

et_n.js

125 ms

um.js

um.js

38 ms

H08f2445feabf4844a9df9292f78e314fX.jpg

H08f2445feabf4844a9df9292f78e314fX.jpg

705 ms

TB1Ay1AVUz1gK0jSZLeXXb9kVXa-196-80.png

TB1Ay1AVUz1gK0jSZLeXXb9kVXa-196-80.png

252 ms

H02af520fedbd4c8a9ee85f4e52f4daff2.jpg

H02af520fedbd4c8a9ee85f4e52f4daff2.jpg

757 ms

H71e90425fd584e30994833c5c4b3630ej.jpg

H71e90425fd584e30994833c5c4b3630ej.jpg

983 ms

H3a37331fe15148e48c2f934a13ecb65f8.jpg

H3a37331fe15148e48c2f934a13ecb65f8.jpg

830 ms

Hf39b3ef2aa9b4b26b9800a251afc0269M.jpg

Hf39b3ef2aa9b4b26b9800a251afc0269M.jpg

779 ms

Hd3e3ef9716564ad189171e573147226dJ.jpg

Hd3e3ef9716564ad189171e573147226dJ.jpg

824 ms

H74aed1e140c8408e851ea0086a20a6f6h.jpg

H74aed1e140c8408e851ea0086a20a6f6h.jpg

1127 ms

Hc8bec1c9593f4df4935ce786683b1d82p.jpg

Hc8bec1c9593f4df4935ce786683b1d82p.jpg

1262 ms

wu.json

wu.json

585 ms

um.json

um.json

55 ms

eg.js

eg.js

3 ms

getUmid.do

getUmid.do

379 ms

Accessibility Review

sifier.en.alibaba.com accessibility score

72

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

High

Links do not have a discernible name

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

sifier.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

sifier.en.alibaba.com SEO score

77

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 Sifier.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 Sifier.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

sifier.en.alibaba.com

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