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tw.jbl.com screenshot

Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

tw.jbl.com

Official JBL Store - Speakers, Headphones, and More!

Page Load Speed

4.6 sec in total

First Response

257 ms

Resources Loaded

2.4 sec

Page Rendered

1.9 sec

tw.jbl.com screenshot

About Website

Visit tw.jbl.com now to see the best up-to-date Tw JBL content for United States and also check out these interesting facts you probably never knew about tw.jbl.com

Premium speakers from JBL such as wireless bluetooth speakers, Android & iOS headphones, soundbars, subwoofers, home theater systems, computer speakers, & iPod/iPhone docks. Get the best sound for mus...

Visit tw.jbl.com

Key Findings

We analyzed Tw.jbl.com page load time and found that the first response time was 257 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

tw.jbl.com performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value30.6 s

0/100

25%

SI (Speed Index)

Value17.1 s

0/100

10%

TBT (Total Blocking Time)

Value2,610 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.45

20/100

15%

TTI (Time to Interactive)

Value93.6 s

0/100

10%

Network Requests Diagram

homepage

257 ms

style.min.css

23 ms

compare-plp.min.css

63 ms

eol-pdp.min.css

70 ms

pdp-v2.min.css

63 ms

Our browser made a total of 154 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Tw.jbl.com, 1% (1 request) were made to 100009099.collect.igodigital.com and 1% (1 request) were made to Ar.huemenar.com. The less responsive or slowest element that took the longest time to load (480 ms) relates to the external source Jbl.com.tw.

Page Optimization Overview & Recommendations

Page size can be reduced by 631.3 kB (2%)

Content Size

30.0 MB

After Optimization

29.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tw.jbl.com main page is 30.0 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. Only a small number of websites need less resources to load. Images take 27.5 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 471.7 kB

  • Original 521.9 kB
  • After minification 500.5 kB
  • After compression 50.2 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. 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 471.7 kB or 90% of the original size.

Image Optimization

-0%

Potential reduce by 94.3 kB

  • Original 27.5 MB
  • After minification 27.4 MB

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. Tw JBL images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 64.4 kB

  • Original 1.8 MB
  • After minification 1.8 MB
  • After compression 1.7 MB

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

-1%

Potential reduce by 998 B

  • Original 121.0 kB
  • After minification 120.9 kB
  • After compression 120.0 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. Tw.jbl.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 104 (73%)

Requests Now

143

After Optimization

39

  • Images
  • JavaScript
  • CSS

The browser has sent 143 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tw JBL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 91 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

homepage

homepage

257 ms

style.min.css

style.min.css

23 ms

compare-plp.min.css

compare-plp.min.css

63 ms

eol-pdp.min.css

eol-pdp.min.css

70 ms

pdp-v2.min.css

pdp-v2.min.css

63 ms

jquery-2.0.3.min.js

jquery-2.0.3.min.js

76 ms

modernizr.js

modernizr.js

87 ms

underscore-1.5.2.min.js

underscore-1.5.2.min.js

66 ms

lazysizes.js

lazysizes.js

125 ms

responsive.css

responsive.css

405 ms

collect.js

collect.js

59 ms

sha256.min.js

sha256.min.js

124 ms

jquery.visible.min.js

jquery.visible.min.js

132 ms

bootstrap.js

bootstrap.js

131 ms

bootstrap-dialog.js

bootstrap-dialog.js

131 ms

parsley-1.2.0-edit.js

parsley-1.2.0-edit.js

130 ms

console.log.polyfill.js

console.log.polyfill.js

131 ms

matchMedia.js

matchMedia.js

165 ms

matchMedia.addListener.js

matchMedia.addListener.js

158 ms

enquire.min.js

enquire.min.js

150 ms

jquery.customSelect.min.js

jquery.customSelect.min.js

153 ms

slick.js

slick.js

154 ms

jquery.ba-hashchange.js

jquery.ba-hashchange.js

178 ms

jquery.touchSwipe.min.js

jquery.touchSwipe.min.js

172 ms

jquery.jqzoom.dw.js

jquery.jqzoom.dw.js

177 ms

jquery.cookiebar.js

jquery.cookiebar.js

175 ms

ios-orientationchange-fix.js

ios-orientationchange-fix.js

190 ms

global.js

global.js

197 ms

ready.js

ready.js

196 ms

load.js

load.js

195 ms

zh_TW.js

zh_TW.js

229 ms

000_head.js

000_head.js

253 ms

100_fitguide.js

100_fitguide.js

237 ms

101_storelocatorUtil.js

101_storelocatorUtil.js

218 ms

001_namespace.js

001_namespace.js

216 ms

002_storefront.js

002_storefront.js

243 ms

003_tooltip.js

003_tooltip.js

232 ms

main.js

main.js

163 ms

js

js

128 ms

gretel.min.js

gretel.min.js

112 ms

004_product.js

004_product.js

247 ms

005_producttile.js

005_producttile.js

206 ms

006_productcompare.js

006_productcompare.js

204 ms

007_compare.js

007_compare.js

227 ms

008_sendtofriend.js

008_sendtofriend.js

227 ms

gtm.js

gtm.js

138 ms

009_search.js

009_search.js

204 ms

010_bonusproductsview.js

010_bonusproductsview.js

197 ms

011_giftcert.js

011_giftcert.js

163 ms

012_giftcard.js

012_giftcard.js

159 ms

013_checkout.js

013_checkout.js

169 ms

014_quickview.js

014_quickview.js

168 ms

015_util.js

015_util.js

172 ms

016_page.js

016_page.js

180 ms

017_registry.js

017_registry.js

170 ms

018_progress.js

018_progress.js

174 ms

019_components.js

019_components.js

170 ms

020_cart.js

020_cart.js

162 ms

021_account.js

021_account.js

164 ms

022_wishlist.js

022_wishlist.js

228 ms

023_minicart.js

023_minicart.js

167 ms

024_dialog.js

024_dialog.js

159 ms

025_validator.js

025_validator.js

161 ms

026_ajax.js

026_ajax.js

164 ms

027_searchsuggest.js

027_searchsuggest.js

173 ms

029_searchplaceholder.js

029_searchplaceholder.js

159 ms

030_jsextensions.js

030_jsextensions.js

154 ms

031_picturefill.js

031_picturefill.js

163 ms

033_navigation.js

033_navigation.js

171 ms

034_vip.js

034_vip.js

165 ms

035_productsupport.js

035_productsupport.js

151 ms

036_storelocator.js

036_storelocator.js

236 ms

037_sap.js

037_sap.js

160 ms

038_cookieprivacy.js

038_cookieprivacy.js

156 ms

099_styleguide.js

099_styleguide.js

223 ms

tealium.js

tealium.js

215 ms

support.js

support.js

216 ms

XXX_footer.js

XXX_footer.js

215 ms

102_shipestimate.js

102_shipestimate.js

213 ms

103_faqupdate.js

103_faqupdate.js

199 ms

104_createaccount.js

104_createaccount.js

198 ms

0040_productspecpdf.js

0040_productspecpdf.js

192 ms

headroom.js

headroom.js

191 ms

header-navigation.js

header-navigation.js

198 ms

gtmcode.js

gtmcode.js

193 ms

105_gsearchsuggestion.js

105_gsearchsuggestion.js

189 ms

108_samsungpay_minicart.js

108_samsungpay_minicart.js

182 ms

productregistration_au.js

productregistration_au.js

177 ms

compare_v2.js

compare_v2.js

178 ms

mc_conversion_trackingpixel.js

mc_conversion_trackingpixel.js

177 ms

jspdf.debug.js

jspdf.debug.js

249 ms

videoLightning.js

videoLightning.js

168 ms

vertebraeAr.js

vertebraeAr.js

241 ms

eol.min.js

eol.min.js

246 ms

plyr.js

plyr.js

230 ms

dwanalytics-22.2.js

dwanalytics-22.2.js

230 ms

dwac-21.7.js

dwac-21.7.js

230 ms

jbllogo.svg

jbllogo.svg

276 ms

tw.png

tw.png

137 ms

Portable_Speaker_Recommender.png

Portable_Speaker_Recommender.png

139 ms

Find_your_perfect_headphone.png

Find_your_perfect_headphone.png

143 ms

JBL_250BBLK_Desktop-to-Mobile_2800x970.jpg

JBL_250BBLK_Desktop-to-Mobile_2800x970.jpg

141 ms

JBL_250BBLK_Desktop-to-Mobile_1398x1398px.jpg

JBL_250BBLK_Desktop-to-Mobile_1398x1398px.jpg

150 ms

SC06377_Website_Banner_History_of_JBL_Callout_WO.jpg

SC06377_Website_Banner_History_of_JBL_Callout_WO.jpg

146 ms

SC06377_Website_Banner_History_of_JBL_Callout_1398x1398px_WO.jpg

SC06377_Website_Banner_History_of_JBL_Callout_1398x1398px_WO.jpg

144 ms

JBL-Soundgear-Frames-text-desktop.jpg

JBL-Soundgear-Frames-text-desktop.jpg

151 ms

JBL-Soundgear-Frames-text-mobile.jpg

JBL-Soundgear-Frames-text-mobile.jpg

147 ms

JBL%20Fit%20Checker%20-%20Website%20Banners_Desktop.jpg

JBL%20Fit%20Checker%20-%20Website%20Banners_Desktop.jpg

152 ms

JBL%20Fit%20Checker%20-%20Website_Mobile.jpg

JBL%20Fit%20Checker%20-%20Website_Mobile.jpg

117 ms

JBL-Roblox_Website-Banner-V2_NoCTA-desktop.jpg

JBL-Roblox_Website-Banner-V2_NoCTA-desktop.jpg

118 ms

JBL-Roblox_Website-Banner-V2_NoCTA-mobile.jpg

JBL-Roblox_Website-Banner-V2_NoCTA-mobile.jpg

121 ms

JBL-CES-AWARDS-2024-Web-Banner-Chinese.jpg

JBL-CES-AWARDS-2024-Web-Banner-Chinese.jpg

172 ms

JBL-CES-AWARDS-2024-Mobile-Banner-Chinese.jpg

JBL-CES-AWARDS-2024-Mobile-Banner-Chinese.jpg

122 ms

Authentics_2800x970.jpg

Authentics_2800x970.jpg

168 ms

HAR0864_MOB_1398x1398_v1_FA3.jpg

HAR0864_MOB_1398x1398_v1_FA3.jpg

162 ms

JBL_Tour%20-Homepage-Banner-TW.jpg

JBL_Tour%20-Homepage-Banner-TW.jpg

156 ms

JBL_Tour-Series-Homepage-Banner-Mobile-TW.jpg

JBL_Tour-Series-Homepage-Banner-Mobile-TW.jpg

158 ms

JBL_E-Shop-TW_Live-Pro-2_2800x970.jpg

JBL_E-Shop-TW_Live-Pro-2_2800x970.jpg

171 ms

JBL_E-Shop-TW_Live_Pro-2%20_1398x1398.jpg

JBL_E-Shop-TW_Live_Pro-2%20_1398x1398.jpg

232 ms

JBL_Quantum_2800x970_Homepage_banner.jpg

JBL_Quantum_2800x970_Homepage_banner.jpg

227 ms

JBL_Quantum_1398x1398Web_Mobile_Banner.jpg

JBL_Quantum_1398x1398Web_Mobile_Banner.jpg

234 ms

JBL_E-Shop-TW_Charge-5_2800x970.jpg

JBL_E-Shop-TW_Charge-5_2800x970.jpg

243 ms

JBL_E-Shop-TW_Charge-5_1398X1398.jpg

JBL_E-Shop-TW_Charge-5_1398X1398.jpg

253 ms

JBL_TOUR_One%20M2_Product%20Image_Hero_Black.jpg

JBL_TOUR_One%20M2_Product%20Image_Hero_Black.jpg

247 ms

hlrwew97gkqiwaiuiar6.jpg

hlrwew97gkqiwaiuiar6.jpg

234 ms

Pearl-Champagne-Square.png

Pearl-Champagne-Square.png

246 ms

HelveticaNeueLTW02-55Roman.woff

HelveticaNeueLTW02-55Roman.woff

375 ms

HelveticaNeueLTW02-75Bold.woff

HelveticaNeueLTW02-75Bold.woff

177 ms

ITCAvantGardeGothicW02-Bold.woff

ITCAvantGardeGothicW02-Bold.woff

293 ms

vk.woff

vk.woff

177 ms

jbl-font.woff

jbl-font.woff

174 ms

1.JBL_Tour_Pro%202_Product%20Image_Hero_Black.jpg

1.JBL_Tour_Pro%202_Product%20Image_Hero_Black.jpg

174 ms

1.JBL_Live%20Pro%202_Product%20image_Hero_White.jpg

1.JBL_Live%20Pro%202_Product%20image_Hero_White.jpg

176 ms

1.JBL_ENDURANCE_RACE_TWS_Product%20Image_Hero_Black.jpg

1.JBL_ENDURANCE_RACE_TWS_Product%20Image_Hero_Black.jpg

173 ms

dtperxqm13sschdztsgn.jpg

dtperxqm13sschdztsgn.jpg

172 ms

nlwe1ifpisqotktew5wv.jpg

nlwe1ifpisqotktew5wv.jpg

203 ms

swatchImage_Orange_Coral.png

swatchImage_Orange_Coral.png

199 ms

1.JBL_TUNE_130NC_Product%20image_Hero_White.jpg

1.JBL_TUNE_130NC_Product%20image_Hero_White.jpg

197 ms

Desert-Sand-square.png

Desert-Sand-square.png

196 ms

footer-logo-akg.png

footer-logo-akg.png

279 ms

footer-logo-hk.png

footer-logo-hk.png

276 ms

footer-logo-infinity.png

footer-logo-infinity.png

275 ms

HelveticaNeueLTW02-45Light.woff

HelveticaNeueLTW02-45Light.woff

338 ms

footer-logo-jbl.png

footer-logo-jbl.png

269 ms

footer-logo-lexicon.png

footer-logo-lexicon.png

268 ms

footer-logo-levinson.png

footer-logo-levinson.png

265 ms

footer-logo-revel.png

footer-logo-revel.png

233 ms

ajax-loader.gif

ajax-loader.gif

323 ms

arrow-left.png

arrow-left.png

405 ms

arrow-right.png

arrow-right.png

124 ms

slick.woff

slick.woff

67 ms

slick.ttf

slick.ttf

115 ms

slick.svg

slick.svg

480 ms

__Analytics-Start

__Analytics-Start

85 ms

Accessibility Review

tw.jbl.com accessibility score

95

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

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

Links do not have a discernible name

Best Practices

tw.jbl.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

tw.jbl.com SEO score

91

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

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tw.jbl.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Chinese language. Our system also found out that Tw.jbl.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

tw.jbl.com

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