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light21st.com screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 92% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

light21st.com

Home

Page Load Speed

1.8 sec in total

First Response

222 ms

Resources Loaded

1.5 sec

Page Rendered

69 ms

light21st.com screenshot

About Website

Welcome to light21st.com homepage info - get ready to check Light 21 St best content right away, or after learning these important things about light21st.com

light21st.com is based in Hong Kong and factory in China, a solution provider of solid state LED lighting. We are experienced in GaN, thermal, luminaries design

Visit light21st.com

Key Findings

We analyzed Light21st.com page load time and found that the first response time was 222 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

light21st.com performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value13.6 s

0/100

25%

SI (Speed Index)

Value17.0 s

0/100

10%

TBT (Total Blocking Time)

Value6,230 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value14.3 s

9/100

10%

Network Requests Diagram

www.light21st.com

222 ms

require.min.js

23 ms

main-r.min.js

22 ms

bt

74 ms

react-with-addons.min.js

30 ms

Our browser made a total of 158 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Light21st.com, 95% (150 requests) were made to Static.parastorage.com and 3% (4 requests) were made to Frog.wix.com. The less responsive or slowest element that took the longest time to load (654 ms) relates to the external source Static.wixstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 694.7 kB (62%)

Content Size

1.1 MB

After Optimization

423.3 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Light21st.com main page is 1.1 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 78.5 kB

  • Original 99.1 kB
  • After minification 98.9 kB
  • After compression 20.5 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 78.5 kB or 79% of the original size.

JavaScript Optimization

-61%

Potential reduce by 615.6 kB

  • Original 1.0 MB
  • After minification 1.0 MB
  • After compression 389.4 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 615.6 kB or 61% of the original size.

CSS Optimization

-4%

Potential reduce by 557 B

  • Original 13.9 kB
  • After minification 13.9 kB
  • After compression 13.4 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. Light21st.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 148 (94%)

Requests Now

157

After Optimization

9

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 157 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Light 21 St. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 149 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.light21st.com

www.light21st.com

222 ms

require.min.js

require.min.js

23 ms

main-r.min.js

main-r.min.js

22 ms

bt

bt

74 ms

react-with-addons.min.js

react-with-addons.min.js

30 ms

4d356a_0c31ec16b6de23bcca679f8e6b41ad39_580.json.z

4d356a_0c31ec16b6de23bcca679f8e6b41ad39_580.json.z

654 ms

4d356a_733860adf6b1988a7ceec8da3c2054b3_580.json.z

4d356a_733860adf6b1988a7ceec8da3c2054b3_580.json.z

408 ms

ugc-viewer

ugc-viewer

26 ms

bt

bt

26 ms

TweenMax.min.js

TweenMax.min.js

23 ms

lodash.min.js

lodash.min.js

24 ms

wixCodeInit.min.js

wixCodeInit.min.js

38 ms

coreUtils.js

coreUtils.js

66 ms

coreUtils.min.js

coreUtils.min.js

48 ms

skins.min.js

skins.min.js

66 ms

components.min.js

components.min.js

183 ms

core.min.js

core.min.js

184 ms

mobx.umd.min.js

mobx.umd.min.js

176 ms

mobx-react.min.js

mobx-react.min.js

182 ms

TweenMax.min.js

TweenMax.min.js

181 ms

animations.min.js

animations.min.js

182 ms

react-with-addons.min.js

react-with-addons.min.js

234 ms

layout.min.js

layout.min.js

234 ms

wixappsCore.min.js

wixappsCore.min.js

234 ms

wixappsClassics.min.js

wixappsClassics.min.js

233 ms

container.min.js

container.min.js

234 ms

imageZoom.min.js

imageZoom.min.js

234 ms

mediaZoom.min.js

mediaZoom.min.js

234 ms

imageZoomDisplayer.min.js

imageZoomDisplayer.min.js

234 ms

matrixGallery.min.js

matrixGallery.min.js

236 ms

slideShowGallery.min.js

slideShowGallery.min.js

234 ms

comboBoxInput.min.js

comboBoxInput.min.js

234 ms

dialogs.min.js

dialogs.min.js

235 ms

table.min.js

table.min.js

235 ms

wixappsBuilder.min.js

wixappsBuilder.min.js

236 ms

tpa.min.js

tpa.min.js

235 ms

dataFixer.min.js

dataFixer.min.js

237 ms

siteUtils.min.js

siteUtils.min.js

236 ms

image.min.js

image.min.js

236 ms

balata.min.js

balata.min.js

235 ms

translationsUtils.min.js

translationsUtils.min.js

238 ms

hammer.min.js

hammer.min.js

236 ms

utils.min.js

utils.min.js

236 ms

fonts.min.js

fonts.min.js

237 ms

platformUtils-bundle.js

platformUtils-bundle.js

237 ms

loggingUtils.min.js

loggingUtils.min.js

231 ms

imageClientApi.js

imageClientApi.js

215 ms

swfobject.min.js

swfobject.min.js

207 ms

santaProps.min.js

santaProps.min.js

200 ms

displayer.min.js

displayer.min.js

187 ms

mousetrap.min.js

mousetrap.min.js

79 ms

DrawSVGPlugin.min.js

DrawSVGPlugin.min.js

69 ms

react-dom.min.js

react-dom.min.js

70 ms

ScrollToPlugin.min.js

ScrollToPlugin.min.js

72 ms

widgets.min.js

widgets.min.js

70 ms

react-dom-server.min.js

react-dom-server.min.js

71 ms

imageCommon.min.js

imageCommon.min.js

50 ms

formCommon.min.js

formCommon.min.js

143 ms

textCommon.min.js

textCommon.min.js

143 ms

containerCommon.min.js

containerCommon.min.js

143 ms

socialCommon.min.js

socialCommon.min.js

143 ms

galleriesCommon.min.js

galleriesCommon.min.js

142 ms

buttonCommon.min.js

buttonCommon.min.js

143 ms

compDesignUtils.min.js

compDesignUtils.min.js

142 ms

mediaCommon.min.js

mediaCommon.min.js

142 ms

audioCommon.min.js

audioCommon.min.js

142 ms

skinExports.min.js

skinExports.min.js

141 ms

compUtils.min.js

compUtils.min.js

142 ms

mobileLayoutUtils.js

mobileLayoutUtils.js

141 ms

pm-rpc.min.js

pm-rpc.min.js

141 ms

tweenEngine.min.js

tweenEngine.min.js

141 ms

multilingual.min.js

multilingual.min.js

141 ms

render.min.js

render.min.js

140 ms

color.min.js

color.min.js

141 ms

zepto.min.js

zepto.min.js

140 ms

xss.min.js

xss.min.js

140 ms

bluebird.min.js

bluebird.min.js

139 ms

imageClientApi.min.js

imageClientApi.min.js

139 ms

column.min.js

column.min.js

139 ms

siteBackground.min.js

siteBackground.min.js

140 ms

hoverBox.min.js

hoverBox.min.js

139 ms

mediaContainerFactory.min.js

mediaContainerFactory.min.js

138 ms

internalMarkings.min.js

internalMarkings.min.js

139 ms

repeater.min.js

repeater.min.js

138 ms

zoomedImage.min.js

zoomedImage.min.js

138 ms

menuButton.min.js

menuButton.min.js

138 ms

messageView.min.js

messageView.min.js

102 ms

backgroundCommon.min.js

backgroundCommon.min.js

64 ms

lodash.min.js

lodash.min.js

143 ms

bt

bt

100 ms

css

css

74 ms

languages.css

languages.css

25 ms

svgShape.min.js

svgShape.min.js

13 ms

adminLoginButton.min.js

adminLoginButton.min.js

14 ms

wTwitterFollow.min.js

wTwitterFollow.min.js

14 ms

facebookComments.min.js

facebookComments.min.js

16 ms

verticalAnchorsMenu.min.js

verticalAnchorsMenu.min.js

14 ms

facebookShare.min.js

facebookShare.min.js

15 ms

vKShareButton.min.js

vKShareButton.min.js

15 ms

youTubeSubscribeButton.min.js

youTubeSubscribeButton.min.js

25 ms

itunesButton.min.js

itunesButton.min.js

23 ms

skypeCallButton.min.js

skypeCallButton.min.js

24 ms

fileUploader.min.js

fileUploader.min.js

25 ms

pinItPinWidget.min.js

pinItPinWidget.min.js

23 ms

popupCloseTextButton.min.js

popupCloseTextButton.min.js

22 ms

radioButton.min.js

radioButton.min.js

25 ms

radioGroup.min.js

radioGroup.min.js

25 ms

documentMedia.min.js

documentMedia.min.js

25 ms

datePicker.min.js

datePicker.min.js

26 ms

contactForm.min.js

contactForm.min.js

25 ms

subscribeForm.min.js

subscribeForm.min.js

25 ms

textArea.min.js

textArea.min.js

26 ms

loginSocialBar.min.js

loginSocialBar.min.js

26 ms

googleMap.min.js

googleMap.min.js

29 ms

soundCloudWidget.min.js

soundCloudWidget.min.js

26 ms

paypalButton.min.js

paypalButton.min.js

27 ms

imageButton.min.js

imageButton.min.js

27 ms

linkBar.min.js

linkBar.min.js

28 ms

spotifyPlayer.min.js

spotifyPlayer.min.js

29 ms

spotifyFollow.min.js

spotifyFollow.min.js

29 ms

twitterFeed.min.js

twitterFeed.min.js

30 ms

backToTopButton.min.js

backToTopButton.min.js

31 ms

svgCommon.min.js

svgCommon.min.js

31 ms

facebookLike.min.js

facebookLike.min.js

31 ms

facebookLikeBox.min.js

facebookLikeBox.min.js

31 ms

flickrBadgeWidget.min.js

flickrBadgeWidget.min.js

32 ms

rssButton.min.js

rssButton.min.js

32 ms

tinyMenu.min.js

tinyMenu.min.js

40 ms

groupContainer.min.js

groupContainer.min.js

39 ms

wGooglePlusOne.min.js

wGooglePlusOne.min.js

40 ms

pinterestPinIt.min.js

pinterestPinIt.min.js

38 ms

pinterestFollow.min.js

pinterestFollow.min.js

39 ms

wTwitterTweet.min.js

wTwitterTweet.min.js

39 ms

audioPlayer.min.js

audioPlayer.min.js

39 ms

loginButton.min.js

loginButton.min.js

33 ms

htmlComponent.min.js

htmlComponent.min.js

31 ms

deadComponent.min.js

deadComponent.min.js

30 ms

mediaPlayer.min.js

mediaPlayer.min.js

31 ms

mediaControls.min.js

mediaControls.min.js

30 ms

singleAudioPlayer.min.js

singleAudioPlayer.min.js

31 ms

quickActionBar.min.js

quickActionBar.min.js

30 ms

boxSlideShowSlide.min.js

boxSlideShowSlide.min.js

30 ms

stripSlideShowSlide.min.js

stripSlideShowSlide.min.js

30 ms

page.min.js

page.min.js

30 ms

bgImageStrip.min.js

bgImageStrip.min.js

31 ms

popupContainer.min.js

popupContainer.min.js

31 ms

stripContainer.min.js

stripContainer.min.js

30 ms

stripColumnsContainer.min.js

stripColumnsContainer.min.js

30 ms

exitMobileModeButton.min.js

exitMobileModeButton.min.js

30 ms

tpaGalleries.min.js

tpaGalleries.min.js

29 ms

flashComponent.min.js

flashComponent.min.js

30 ms

stripSlideShow.min.js

stripSlideShow.min.js

29 ms

mobileActionsMenu.min.js

mobileActionsMenu.min.js

29 ms

verticalMenu.min.js

verticalMenu.min.js

28 ms

disqusComments.min.js

disqusComments.min.js

28 ms

checkbox.min.js

checkbox.min.js

28 ms

gridComponent.min.js

gridComponent.min.js

28 ms

languageSelector.min.js

languageSelector.min.js

28 ms

Accessibility Review

light21st.com accessibility score

97

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.

Best Practices

light21st.com best practices score

75

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

SEO Factors

light21st.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

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

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 Light21st.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 Light21st.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

light21st.com

Open Graph data is detected on the main page of Light 21 St. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: