Tools & Wizards About Us
changlux.com screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

changlux.com

China Led Energy-Saving Lights Manufacturers, Suppliers

Page Load Speed

4 sec in total

First Response

162 ms

Resources Loaded

3.3 sec

Page Rendered

575 ms

changlux.com screenshot

About Website

Welcome to changlux.com homepage info - get ready to check Changlux best content for China right away, or after learning these important things about changlux.com

Zhejiang Changlux lighting Co., Ltd is famous China led energy-saving lights manufacturers and wholesale led energy-saving lights suppliers, Welcome!

Visit changlux.com

Key Findings

We analyzed Changlux.com page load time and found that the first response time was 162 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

changlux.com performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

1/100

25%

SI (Speed Index)

Value8.6 s

17/100

10%

TBT (Total Blocking Time)

Value3,250 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.087

93/100

15%

TTI (Time to Interactive)

Value11.0 s

21/100

10%

Network Requests Diagram

changlux.com

162 ms

www.changlux.com

423 ms

styles.css

112 ms

prettyPhoto.css

184 ms

lightbox.min.css

182 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 96% of them (43 requests) were addressed to the original Changlux.com, 2% (1 request) were made to Sdk.51.la and 2% (1 request) were made to Collect-v6.51.la. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Collect-v6.51.la.

Page Optimization Overview & Recommendations

Page size can be reduced by 53.7 kB (9%)

Content Size

605.9 kB

After Optimization

552.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Changlux.com main page is 605.9 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. 60% of websites need less resources to load. Images take 526.0 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 29.3 kB

  • Original 35.5 kB
  • After minification 29.6 kB
  • After compression 6.2 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. This page needs HTML code to be minified as it can gain 5.9 kB, which is 17% 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 29.3 kB or 83% of the original size.

Image Optimization

-3%

Potential reduce by 13.5 kB

  • Original 526.0 kB
  • After minification 512.5 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. Changlux images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 17 B

  • Original 655 B
  • After minification 655 B
  • After compression 638 B

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

-25%

Potential reduce by 10.9 kB

  • Original 43.8 kB
  • After minification 43.8 kB
  • After compression 32.9 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. Changlux.com needs all CSS files to be minified and compressed as it can save up to 10.9 kB or 25% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (72%)

Requests Now

39

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Changlux. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

changlux.com

changlux.com

162 ms

www.changlux.com

www.changlux.com

423 ms

styles.css

styles.css

112 ms

prettyPhoto.css

prettyPhoto.css

184 ms

lightbox.min.css

lightbox.min.css

182 ms

jquery.js

jquery.js

213 ms

jquery-migrate.min.js

jquery-migrate.min.js

188 ms

qrcode.min.js

qrcode.min.js

191 ms

font-awesome.min.css

font-awesome.min.css

308 ms

swiper.min.css

swiper.min.css

359 ms

animate.min.css

animate.min.css

342 ms

basic.css

basic.css

360 ms

main.css

main.css

413 ms

1013_361_.js

1013_361_.js

413 ms

js-sdk-pro.min.js

js-sdk-pro.min.js

447 ms

hwaq.js

hwaq.js

412 ms

index_js.js

index_js.js

410 ms

email-decode.min.js

email-decode.min.js

407 ms

jquery-3.3.1.min.js

jquery-3.3.1.min.js

444 ms

swiper.min.js

swiper.min.js

799 ms

wow.js

wow.js

749 ms

script.js

script.js

747 ms

main.js

main.js

786 ms

flexslider.css

flexslider.css

747 ms

public.css

public.css

749 ms

scripts.js

scripts.js

792 ms

jquery.prettyPhoto.js

jquery.prettyPhoto.js

790 ms

jquery.touchwipe.min.js

jquery.touchwipe.min.js

793 ms

jquery.lightbox.min.js

jquery.lightbox.min.js

792 ms

wp-embed.min.js

wp-embed.min.js

794 ms

jquery.flexslider.min.js

jquery.flexslider.min.js

794 ms

jQuery.easing.min.js

jQuery.easing.min.js

818 ms

collect

collect

1673 ms

logo.png

logo.png

251 ms

search.png

search.png

236 ms

banner.jpg

banner.jpg

255 ms

video.jpg

video.jpg

239 ms

play.png

play.png

230 ms

CL-BL-A100.jpg

CL-BL-A100.jpg

283 ms

CL-BL-A300.jpg

CL-BL-A300.jpg

284 ms

foot-logo.png

foot-logo.png

248 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

336 ms

DINCond-Medium.otf

DINCond-Medium.otf

332 ms

footbg.jpg

footbg.jpg

288 ms

avenirltstd-medium.woff.ttf

avenirltstd-medium.woff.ttf

264 ms

Accessibility Review

changlux.com accessibility score

67

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-hidden="true"] elements contain focusable descendents

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

Form elements do not have associated labels

High

Links do not have a discernible name

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

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

changlux.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

changlux.com SEO score

97

Search Engine Optimization Advices

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Changlux.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Changlux.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

changlux.com

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