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ledvanceus.com screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

ledvanceus.com

LEDVANCE US and Canada | SYLVANIA General Lighting | Home Page

Page Load Speed

7.4 sec in total

First Response

353 ms

Resources Loaded

7 sec

Page Rendered

88 ms

ledvanceus.com screenshot

About Website

Visit ledvanceus.com now to see the best up-to-date LEDVANCE US content for United States and also check out these interesting facts you probably never knew about ledvanceus.com

LEDVANCE is proud to offer innovative SYLVANIA LED lamps, bulbs, luminaires, fixtures and traditional lighting products. SYLVANIA - a global leader in lighting.

Visit ledvanceus.com

Key Findings

We analyzed Ledvanceus.com page load time and found that the first response time was 353 ms and then it took 7.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

ledvanceus.com performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value21.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value34.7 s

0/100

25%

SI (Speed Index)

Value21.4 s

0/100

10%

TBT (Total Blocking Time)

Value1,180 ms

21/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value51.5 s

0/100

10%

Network Requests Diagram

default.aspx

353 ms

css

30 ms

pagelayouts15.css

67 ms

corev15.css

258 ms

sylvania.css

147 ms

Our browser made a total of 161 requests to load all elements on the main page. We found that 47% of them (75 requests) were addressed to the original Ledvanceus.com, 12% (20 requests) were made to Assets3.ledvanceus.com and 9% (14 requests) were made to Slxcloud.app. The less responsive or slowest element that took the longest time to load (4.7 sec) relates to the external source Cloud.email.ledvance.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.1 MB (37%)

Content Size

8.5 MB

After Optimization

5.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ledvanceus.com main page is 8.5 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. Images take 4.7 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 238.6 kB

  • Original 291.8 kB
  • After minification 272.0 kB
  • After compression 53.2 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 238.6 kB or 82% of the original size.

Image Optimization

-12%

Potential reduce by 568.2 kB

  • Original 4.7 MB
  • After minification 4.2 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. Obviously, LEDVANCE US needs image optimization as it can save up to 568.2 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-56%

Potential reduce by 1.2 MB

  • Original 2.1 MB
  • After minification 2.0 MB
  • After compression 930.2 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 1.2 MB or 56% of the original size.

CSS Optimization

-85%

Potential reduce by 1.1 MB

  • Original 1.4 MB
  • After minification 1.0 MB
  • After compression 206.5 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. Ledvanceus.com needs all CSS files to be minified and compressed as it can save up to 1.1 MB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 89 (59%)

Requests Now

152

After Optimization

63

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 152 CSS, Javascripts, AJAX and image requests in order to completely render the main page of LEDVANCE US. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 43 to 1 for JavaScripts and from 27 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

default.aspx

default.aspx

353 ms

css

css

30 ms

pagelayouts15.css

pagelayouts15.css

67 ms

corev15.css

corev15.css

258 ms

sylvania.css

sylvania.css

147 ms

additionalStyles.css

additionalStyles.css

101 ms

style.css

style.css

91 ms

fabric.css

fabric.css

220 ms

ledvanceCSS.css

ledvanceCSS.css

184 ms

ledvance_clean.css

ledvance_clean.css

144 ms

ledvance.css

ledvance.css

235 ms

initstrings.js

initstrings.js

164 ms

init.js

init.js

292 ms

strings.js

strings.js

289 ms

jquery-3.3.1.min.js

jquery-3.3.1.min.js

286 ms

utilities.js

utilities.js

286 ms

collapsiblesitemap.js

collapsiblesitemap.js

287 ms

tabs.js

tabs.js

288 ms

bootstrap.js

bootstrap.js

330 ms

js.cookie.min.js

js.cookie.min.js

288 ms

visitor-settings.js

visitor-settings.js

289 ms

cookie-disclaimer.js

cookie-disclaimer.js

289 ms

jquery.qacontainer.js

jquery.qacontainer.js

328 ms

jsrsclient.js

jsrsclient.js

338 ms

captureeventsjs.js

captureeventsjs.js

339 ms

theming.js

theming.js

339 ms

ie55up.js

ie55up.js

345 ms

logon.js

logon.js

342 ms

ScriptResource.axd

ScriptResource.axd

343 ms

blank.js

blank.js

341 ms

ScriptResource.axd

ScriptResource.axd

344 ms

topmenu.js

topmenu.js

343 ms

search.js

search.js

354 ms

form.css

form.css

349 ms

js

js

44 ms

WebResource.axd

WebResource.axd

340 ms

ScriptResource.axd

ScriptResource.axd

339 ms

platform.js

platform.js

32 ms

gtm.js

gtm.js

205 ms

asset-13123982

asset-13123982

203 ms

asset-13137378_luxury_car_with_phase_ev_charger.webp

asset-13137378_luxury_car_with_phase_ev_charger.webp

1570 ms

asset-1406235

asset-1406235

320 ms

asset-1406235

asset-1406235

267 ms

asset-13181422

asset-13181422

437 ms

asset-13159687

asset-13159687

439 ms

asset-13159686

asset-13159686

268 ms

asset-13159688

asset-13159688

319 ms

asset-13159695

asset-13159695

317 ms

asset-13159685

asset-13159685

436 ms

asset-13159690

asset-13159690

444 ms

asset-13193437

asset-13193437

441 ms

asset-13193439

asset-13193439

565 ms

asset-13196267

asset-13196267

440 ms

asset-13196271

asset-13196271

442 ms

asset-13190196

asset-13190196

526 ms

asset-13190200

asset-13190200

503 ms

asset-13179093

asset-13179093

507 ms

asset-13179092

asset-13179092

527 ms

asset-13115655

asset-13115655

529 ms

asset-13191595

asset-13191595

527 ms

spcommon.png

spcommon.png

42 ms

searchresultui.png

searchresultui.png

42 ms

tvblank.gif

tvblank.gif

42 ms

itgen.png

itgen.png

43 ms

itdl.png

itdl.png

42 ms

MDNCollapsed.png

MDNCollapsed.png

77 ms

ital.png

ital.png

151 ms

itil.png

itil.png

197 ms

ittask.png

ittask.png

196 ms

SharePointFoundation16.png

SharePointFoundation16.png

196 ms

outdoor-fixtures-banner.jpg

outdoor-fixtures-banner.jpg

197 ms

ledvance-lightpoint-traning-center.jpeg

ledvance-lightpoint-traning-center.jpeg

263 ms

wall-mount-lantern-family.PNG

wall-mount-lantern-family.PNG

403 ms

t5-vs-t8-tube-light.png

t5-vs-t8-tube-light.png

434 ms

global-lighting-leader.png

global-lighting-leader.png

313 ms

industry-leading-quality.png

industry-leading-quality.png

313 ms

right-products.png

right-products.png

313 ms

enegery-saving.png

enegery-saving.png

429 ms

pagelayouts15.css

pagelayouts15.css

404 ms

corev15.css

corev15.css

780 ms

sylvania.css

sylvania.css

529 ms

additionalStyles.css

additionalStyles.css

492 ms

style.css

style.css

491 ms

fabric.css

fabric.css

616 ms

ledvanceCSS.css

ledvanceCSS.css

614 ms

ledvance_clean.css

ledvance_clean.css

547 ms

ledvance.css

ledvance.css

789 ms

analytics.js

analytics.js

375 ms

toggle.png

toggle.png

733 ms

menu-down.gif

menu-down.gif

733 ms

menu-right.gif

menu-right.gif

733 ms

separator01.gif

separator01.gif

1181 ms

jizaRExUiTo99u79D0KEww.woff

jizaRExUiTo99u79D0KEww.woff

321 ms

HA4TqmrNCVY

HA4TqmrNCVY

375 ms

VCQolhBMC_M

VCQolhBMC_M

499 ms

fGlQfCzCILk

fGlQfCzCILk

675 ms

fabricmdl2icons-2.68.woff

fabricmdl2icons-2.68.woff

382 ms

contact-us

contact-us

4738 ms

stay-up-to-date

stay-up-to-date

4737 ms

newsletter_Icon.png

newsletter_Icon.png

1198 ms

sp.init.js

sp.init.js

1144 ms

core.js

core.js

1289 ms

MDNExpanded.png

MDNExpanded.png

901 ms

loader.js

loader.js

233 ms

landing

landing

330 ms

collect

collect

36 ms

www-player.css

www-player.css

68 ms

www-embed-player.js

www-embed-player.js

66 ms

base.js

base.js

304 ms

bundle_legacy.js

bundle_legacy.js

117 ms

collect

collect

272 ms

ad_status.js

ad_status.js

560 ms

6mt_jkCC8QEMfVv4UaXe0WVRezbgElH9_VSMBGBwk28.js

6mt_jkCC8QEMfVv4UaXe0WVRezbgElH9_VSMBGBwk28.js

335 ms

embed.js

embed.js

87 ms

login.aspx

login.aspx

455 ms

KFOmCnqEu92Fr1Mu4mxM.woff

KFOmCnqEu92Fr1Mu4mxM.woff

65 ms

KFOlCnqEu92Fr1MmEU9fBBc-.woff

KFOlCnqEu92Fr1MmEU9fBBc-.woff

81 ms

mquery.js

mquery.js

41 ms

sp.core.js

sp.core.js

273 ms

corev15.css

corev15.css

279 ms

qHdTXW9XZgm1I6.json

qHdTXW9XZgm1I6.json

268 ms

id

id

23 ms

Create

Create

271 ms

Create

Create

273 ms

Create

Create

374 ms

GenerateIT

GenerateIT

188 ms

GenerateIT

GenerateIT

189 ms

GenerateIT

GenerateIT

25 ms

languages.json

languages.json

116 ms

en.json

en.json

111 ms

cross-domain-bridge.html

cross-domain-bridge.html

7 ms

1px.png

1px.png

10 ms

translations-en.json

translations-en.json

3 ms

en

en

154 ms

uct

uct

1575 ms

asset-55162

asset-55162

1624 ms

log_event

log_event

92 ms

log_event

log_event

72 ms

log_event

log_event

66 ms

css_forms.css

css_forms.css

332 ms

javascript_forms.js

javascript_forms.js

660 ms

LedvanceIcon.png

LedvanceIcon.png

80 ms

jquery-3.5.1.min.dc5e7f18c8.js

jquery-3.5.1.min.dc5e7f18c8.js

55 ms

led-preference-center-200-34b9af6952255.js

led-preference-center-200-34b9af6952255.js

326 ms

normalize.css

normalize.css

326 ms

components.css

components.css

388 ms

led-preference-center-200-34b9af6952255.css

led-preference-center-200-34b9af6952255.css

387 ms

css-stayuptodate.css

css-stayuptodate.css

298 ms

javascript-stayuptodate.js

javascript-stayuptodate.js

708 ms

Group_164.png

Group_164.png

392 ms

Group_497Group_496.png

Group_497Group_496.png

386 ms

Group_494Group_493.png

Group_494Group_493.png

393 ms

Group_499Group_498.png

Group_499Group_498.png

413 ms

Path_333Path_332.png

Path_333Path_332.png

452 ms

Group_502Group_500.png

Group_502Group_500.png

453 ms

Group_503Group_501.png

Group_503Group_501.png

453 ms

LED-8.4.23-Newsletter-Opt-In_Background.png

LED-8.4.23-Newsletter-Opt-In_Background.png

570 ms

pd.js

pd.js

13 ms

HelveticaNeueLt.ttf

HelveticaNeueLt.ttf

154 ms

HelveticaNeueBd.ttf

HelveticaNeueBd.ttf

149 ms

pd.js

pd.js

7 ms

Accessibility Review

ledvanceus.com accessibility score

89

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.

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

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

ledvanceus.com best practices score

58

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

High

Page has valid source maps

SEO Factors

ledvanceus.com SEO score

84

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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

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 Ledvanceus.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 Ledvanceus.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

ledvanceus.com

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