Tools & Wizards About Us
duolin.com screenshot

Report Summary

  • 62

    Performance

    Renders faster than
    76% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

duolin.com

Induction Heating Machines, Induction Generator for Sale in China

Page Load Speed

19 sec in total

First Response

622 ms

Resources Loaded

18.2 sec

Page Rendered

201 ms

duolin.com screenshot

About Website

Welcome to duolin.com homepage info - get ready to check Duolin best content for India right away, or after learning these important things about duolin.com

Duolin design manufactures and services for induction heating machine, induction generators, induction billet heating furnace which are better performance at Induction heating, induction bending, indu...

Visit duolin.com

Key Findings

We analyzed Duolin.com page load time and found that the first response time was 622 ms and then it took 18.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

duolin.com performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value7.7 s

3/100

25%

SI (Speed Index)

Value4.4 s

73/100

10%

TBT (Total Blocking Time)

Value160 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.059

98/100

15%

TTI (Time to Interactive)

Value6.5 s

58/100

10%

Network Requests Diagram

duolin.com

622 ms

main.css

620 ms

jquery-1.11.3.min.js

626 ms

placeholder.js

553 ms

cookie-consent.js

76 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 93% of them (42 requests) were addressed to the original Duolin.com, 2% (1 request) were made to Termsfeed.com and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (16.9 sec) relates to the external source Chat.chukouplus.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 53.8 kB (8%)

Content Size

697.0 kB

After Optimization

643.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Duolin.com main page is 697.0 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. 30% of websites need less resources to load. Images take 507.4 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 49.7 kB

  • Original 60.0 kB
  • After minification 52.3 kB
  • After compression 10.3 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 7.7 kB, which is 13% 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 49.7 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 2.1 kB

  • Original 507.4 kB
  • After minification 505.3 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. Duolin images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 331 B

  • Original 115.2 kB
  • After minification 115.2 kB
  • After compression 114.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-11%

Potential reduce by 1.6 kB

  • Original 14.4 kB
  • After minification 14.4 kB
  • After compression 12.7 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. Duolin.com needs all CSS files to be minified and compressed as it can save up to 1.6 kB or 11% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (55%)

Requests Now

42

After Optimization

19

  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duolin. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

duolin.com

duolin.com

622 ms

main.css

main.css

620 ms

jquery-1.11.3.min.js

jquery-1.11.3.min.js

626 ms

placeholder.js

placeholder.js

553 ms

cookie-consent.js

cookie-consent.js

76 ms

baguetteBox.js

baguetteBox.js

553 ms

jquery.jqzoom.js

jquery.jqzoom.js

553 ms

lunbo.js

lunbo.js

555 ms

slide2.js

slide2.js

561 ms

banner2.js

banner2.js

559 ms

jquery.lazyload.min.js

jquery.lazyload.min.js

560 ms

html5.js

html5.js

599 ms

base.js

base.js

633 ms

nav.js

nav.js

633 ms

resize.js

resize.js

635 ms

form1.js

form1.js

71 ms

gtm.js

gtm.js

85 ms

china.jpg

china.jpg

87 ms

5e213ea988a66.png

5e213ea988a66.png

88 ms

5e213eb56e2b6.png

5e213eb56e2b6.png

86 ms

web1.png

web1.png

105 ms

web10.png

web10.png

105 ms

5e158d5e5d2a2.jpg

5e158d5e5d2a2.jpg

251 ms

5e158d3c27b55.jpg

5e158d3c27b55.jpg

292 ms

5e158d12b864c.jpg

5e158d12b864c.jpg

289 ms

5e158cb7157e1.jpg

5e158cb7157e1.jpg

285 ms

video.png

video.png

243 ms

5e16ccd01517c.jpg

5e16ccd01517c.jpg

177 ms

5e16ccbdb3c5b.jpg

5e16ccbdb3c5b.jpg

250 ms

5e16ccaa59a87.jpg

5e16ccaa59a87.jpg

312 ms

5e16cc9bdc124.jpg

5e16cc9bdc124.jpg

320 ms

google.png

google.png

319 ms

facebook.png

facebook.png

354 ms

twitter.png

twitter.png

358 ms

linkedin.png

linkedin.png

361 ms

vr.jpg

vr.jpg

383 ms

web2.png

web2.png

382 ms

skype.png

skype.png

384 ms

init_kefu.js

init_kefu.js

16923 ms

dot1.png

dot1.png

356 ms

dot.png

dot.png

360 ms

656febbb397f1.jpg

656febbb397f1.jpg

363 ms

64b50ed21df8d.jpg

64b50ed21df8d.jpg

384 ms

Palermo-Bold.woff

Palermo-Bold.woff

392 ms

iconfont.woff

iconfont.woff

395 ms

Accessibility Review

duolin.com accessibility score

71

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

button, link, and menuitem elements do not have accessible names.

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

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

duolin.com 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

duolin.com SEO score

83

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 uses legible font sizes

High

Tap targets are not sized appropriately

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 Duolin.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 Duolin.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

duolin.com

Open Graph description is not detected on the main page of Duolin. 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: