Tools & Wizards About Us
shuangdeng.com.cn screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 57

    Accessibility

    Visual factors better than
    that of 24% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

shuangdeng.com.cn

双登股份 绿色能源存储专家-官网

Page Load Speed

59.3 sec in total

First Response

8.7 sec

Resources Loaded

50.4 sec

Page Rendered

299 ms

shuangdeng.com.cn screenshot

About Website

Click here to check amazing Shuangdeng content. Otherwise, check out these important facts you probably never knew about shuangdeng.com.cn

双登股份 绿色能源存储专家

Visit shuangdeng.com.cn

Key Findings

We analyzed Shuangdeng.com.cn page load time and found that the first response time was 8.7 sec and then it took 50.7 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 42 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

shuangdeng.com.cn performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value9.0 s

1/100

25%

SI (Speed Index)

Value14.0 s

1/100

10%

TBT (Total Blocking Time)

Value330 ms

75/100

30%

CLS (Cumulative Layout Shift)

Value1.14

1/100

15%

TTI (Time to Interactive)

Value3.2 s

94/100

10%

Network Requests Diagram

shuangdeng.com.cn

8653 ms

main.css

2318 ms

622.css

7086 ms

jquery.spinner.css

4204 ms

jquery.js

16016 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that all of those requests were addressed to Shuangdeng.com.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain Shuangdeng.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 223.3 kB (45%)

Content Size

495.6 kB

After Optimization

272.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Shuangdeng.com.cn main page is 495.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 15% of websites need less resources to load. Images take 339.1 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 47.5 kB

  • Original 55.2 kB
  • After minification 38.0 kB
  • After compression 7.7 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. This page needs HTML code to be minified as it can gain 17.2 kB, which is 31% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 47.5 kB or 86% of the original size.

Image Optimization

-28%

Potential reduce by 95.6 kB

  • Original 339.1 kB
  • After minification 243.5 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. Obviously, Shuangdeng needs image optimization as it can save up to 95.6 kB or 28% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-75%

Potential reduce by 34.2 kB

  • Original 45.3 kB
  • After minification 38.9 kB
  • After compression 11.1 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 34.2 kB or 75% of the original size.

CSS Optimization

-82%

Potential reduce by 46.1 kB

  • Original 56.0 kB
  • After minification 49.7 kB
  • After compression 9.9 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. Shuangdeng.com.cn needs all CSS files to be minified and compressed as it can save up to 46.1 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (11%)

Requests Now

28

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Shuangdeng. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

shuangdeng.com.cn

shuangdeng.com.cn

8653 ms

main.css

main.css

2318 ms

622.css

622.css

7086 ms

jquery.spinner.css

jquery.spinner.css

4204 ms

jquery.js

jquery.js

16016 ms

jquery.fullPage.min.js

jquery.fullPage.min.js

3307 ms

jquery.mousewheel.min.js

jquery.mousewheel.min.js

433 ms

main.js

main.js

7059 ms

logo_w_s.png

logo_w_s.png

9625 ms

arrow_x.png

arrow_x.png

508 ms

hbtns_link2.png

hbtns_link2.png

952 ms

hbtns_link3.png

hbtns_link3.png

967 ms

h_search.png

h_search.png

1419 ms

next.png

next.png

3298 ms

prev.png

prev.png

1864 ms

16142404hxgt.jpg

16142404hxgt.jpg

20335 ms

play.png

play.png

2877 ms

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09095451i7zg.jpg

20334 ms

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16142439p6i2.jpg

20335 ms

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16142518gjxq.jpg

20325 ms

1614260550u1.jpg

1614260550u1.jpg

20326 ms

arrow.png

arrow.png

17363 ms

i_bg.png

i_bg.png

20325 ms

30212448nvqs.jpg

30212448nvqs.jpg

20325 ms

dot.png

dot.png

20325 ms

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01132512bex8.jpg

20326 ms

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01132529co44.jpg

20326 ms

01132546msvc.jpg

01132546msvc.jpg

20328 ms

page3_bg.png

page3_bg.png

20329 ms

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02164305t3dl.jpg

20331 ms

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04133800uly8.jpg

20332 ms

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04133813ihfh.jpg

20333 ms

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02164552ch89.jpg

20333 ms

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02164601wnu9.jpg

20337 ms

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02164609vw4o.jpg

20341 ms

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02165216kp5v.jpg

20343 ms

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01133941n0x1.jpg

20346 ms

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01141311tr15.jpg

20347 ms

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01135440gn5b.jpg

20347 ms

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01141151m5jw.jpg

20347 ms

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0114002942n4.jpg

19882 ms

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01141056erbl.png

19875 ms

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011514008vsq.jpg

20408 ms

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081718445n5q.jpg

20380 ms

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081719179y7g.jpg

19929 ms

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08171938yya7.jpg

20259 ms

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08172002n7d7.jpg

20428 ms

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08172019rjtv.jpg

20177 ms

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081720361leb.jpg

20037 ms

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18324 ms

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08172203wnio.jpg

13986 ms

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08172317muod.jpg

13422 ms

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08172222dlv9.jpg

8766 ms

08172346ehdh.jpg

08172346ehdh.jpg

7389 ms

pic04_1.jpg

pic04_1.jpg

18091 ms

pic04_4.jpg

pic04_4.jpg

10807 ms

pic04_2.jpg

pic04_2.jpg

13764 ms

pic04_5.jpg

pic04_5.jpg

13248 ms

pic04_3.jpg

pic04_3.jpg

19994 ms

pic04_6.jpg

pic04_6.jpg

19995 ms

p5_bg1.jpg

p5_bg1.jpg

19994 ms

07092157jdk1.jpg

07092157jdk1.jpg

19995 ms

icon.png

icon.png

15155 ms

p5_bg2.jpg

p5_bg2.jpg

19992 ms

220941034htq.jpg

220941034htq.jpg

19989 ms

p5_bg3.jpg

p5_bg3.jpg

19988 ms

220938182kjd.png

220938182kjd.png

19987 ms

foot_bg.png

foot_bg.png

19991 ms

foot-bg2.png

foot-bg2.png

19987 ms

wx_cn.jpg

wx_cn.jpg

19983 ms

wx_en.jpg

wx_en.jpg

19980 ms

Accessibility Review

shuangdeng.com.cn accessibility score

57

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

High

Heading elements are not in a sequentially-descending order

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

shuangdeng.com.cn best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

SEO Factors

shuangdeng.com.cn SEO score

58

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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Shuangdeng.com.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that Shuangdeng.com.cn 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

shuangdeng.com.cn

Open Graph description is not detected on the main page of Shuangdeng. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: