Tools & Wizards About Us
knebel.de screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

knebel.de

KNEBEL » Ihr Experte für Infrarot Heizsysteme

Page Load Speed

4.1 sec in total

First Response

367 ms

Resources Loaded

3.2 sec

Page Rendered

504 ms

knebel.de screenshot

About Website

Visit knebel.de now to see the best up-to-date KNEBEL content for Ukraine and also check out these interesting facts you probably never knew about knebel.de

Infrarot Heizsysteme von KNEBEL: Made in Germany ✓ Große Auswahl ✓ Direkt vom Hersteller ✓ ▶ Jetzt kaufen!

Visit knebel.de

Key Findings

We analyzed Knebel.de page load time and found that the first response time was 367 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

knebel.de performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.1 s

1/100

10%

LCP (Largest Contentful Paint)

Value17.8 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value970 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0.105

88/100

15%

TTI (Time to Interactive)

Value17.3 s

4/100

10%

Network Requests Diagram

knebel.de

367 ms

www.knebel.de

617 ms

jquery.js

382 ms

stmenu.js

288 ms

smooth.pack.js

204 ms

Our browser made a total of 92 requests to load all elements on the main page. We found that 80% of them (74 requests) were addressed to the original Knebel.de, 3% (3 requests) were made to S7.addthis.com and 3% (3 requests) were made to Storage.googleapis.com. The less responsive or slowest element that took the longest time to load (980 ms) belongs to the original domain Knebel.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 636.3 kB (29%)

Content Size

2.2 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Knebel.de main page is 2.2 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. 55% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 82.6 kB

  • Original 116.0 kB
  • After minification 113.7 kB
  • After compression 33.5 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 82.6 kB or 71% of the original size.

Image Optimization

-4%

Potential reduce by 46.3 kB

  • Original 1.2 MB
  • After minification 1.2 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. KNEBEL images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 483.1 kB

  • Original 768.2 kB
  • After minification 741.2 kB
  • After compression 285.0 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 483.1 kB or 63% of the original size.

CSS Optimization

-85%

Potential reduce by 24.3 kB

  • Original 28.7 kB
  • After minification 21.5 kB
  • After compression 4.4 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. Knebel.de needs all CSS files to be minified and compressed as it can save up to 24.3 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (20%)

Requests Now

87

After Optimization

70

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of KNEBEL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

knebel.de

knebel.de

367 ms

www.knebel.de

www.knebel.de

617 ms

jquery.js

jquery.js

382 ms

stmenu.js

stmenu.js

288 ms

smooth.pack.js

smooth.pack.js

204 ms

fading.js

fading.js

207 ms

standard.css

standard.css

325 ms

jquery.backstretch.min.js

jquery.backstretch.min.js

294 ms

colorbox.css

colorbox.css

304 ms

jquery.min.js

jquery.min.js

73 ms

jquery.colorbox.js

jquery.colorbox.js

404 ms

slider.css

slider.css

391 ms

jquery.orbit-1.2.3.min.js

jquery.orbit-1.2.3.min.js

396 ms

track.php

track.php

420 ms

addthis_widget.js

addthis_widget.js

9 ms

conversion.js

conversion.js

28 ms

stcode.js

stcode.js

288 ms

track.php

track.php

170 ms

stern4-5.jpg

stern4-5.jpg

112 ms

knebel_logo.png

knebel_logo.png

101 ms

slogan.png

slogan.png

106 ms

irheizung.png

irheizung.png

101 ms

hochkeistungsstrahler.png

hochkeistungsstrahler.png

110 ms

waermestrahler.png

waermestrahler.png

106 ms

WaermepumpeNAV.png

WaermepumpeNAV.png

199 ms

zubehoer.png

zubehoer.png

198 ms

energiehaus.png

energiehaus.png

313 ms

slide01.jpg

slide01.jpg

407 ms

Heizkostenrechner-Slide.jpg

Heizkostenrechner-Slide.jpg

662 ms

slide02.jpg

slide02.jpg

419 ms

HomeControl-Slide.jpg

HomeControl-Slide.jpg

773 ms

slide04.jpg

slide04.jpg

586 ms

bt_start_03.jpg

bt_start_03.jpg

429 ms

bt_start_04.jpg

bt_start_04.jpg

574 ms

bt_start_05.jpg

bt_start_05.jpg

575 ms

bt_start_06.jpg

bt_start_06.jpg

576 ms

bt_start_01.png

bt_start_01.png

663 ms

bt_aktuelles.jpg

bt_aktuelles.jpg

662 ms

Vertriebspartner_gesucht.jpg

Vertriebspartner_gesucht.jpg

662 ms

bt_onlineshop.jpg

bt_onlineshop.jpg

708 ms

Ausstellung.jpg

Ausstellung.jpg

763 ms

btn_samstag.png

btn_samstag.png

765 ms

Infobox_Gutachten.jpg

Infobox_Gutachten.jpg

762 ms

TUV_GS_Zertifikat.jpg

TUV_GS_Zertifikat.jpg

764 ms

Banner-PS-Reflex-Aktion.jpg

Banner-PS-Reflex-Aktion.jpg

970 ms

index_Energieberatung.jpg

index_Energieberatung.jpg

865 ms

index_PowerSunPerfekt.jpg

index_PowerSunPerfekt.jpg

864 ms

index_Heizkosten_berechnen.jpg

index_Heizkosten_berechnen.jpg

870 ms

index_HomeControlXL.jpg

index_HomeControlXL.jpg

875 ms

index_sofa.jpg

index_sofa.jpg

868 ms

index_irhauswahl.jpg

index_irhauswahl.jpg

971 ms

index_bewertungen.jpg

index_bewertungen.jpg

971 ms

index_mehrfamilienhaus.jpg

index_mehrfamilienhaus.jpg

968 ms

index_haus.jpg

index_haus.jpg

973 ms

analytics.js

analytics.js

6 ms

index_produktion(1).jpg

index_produktion(1).jpg

970 ms

ce28da13-e5ac-f494-8d05-39775f36d950_js_button.php

ce28da13-e5ac-f494-8d05-39775f36d950_js_button.php

459 ms

collect

collect

21 ms

Knebel_Studien.jpg

Knebel_Studien.jpg

975 ms

index_logo.jpg

index_logo.jpg

974 ms

fh_menzenschwand.jpg

fh_menzenschwand.jpg

974 ms

Trennlinie.gif

Trennlinie.gif

973 ms

stern4-5.jpg

stern4-5.jpg

980 ms

bt_shop1.jpg

bt_shop1.jpg

891 ms

Navigationstrenner.gif

Navigationstrenner.gif

973 ms

supportchat_offline.png

supportchat_offline.png

932 ms

arrow_up_footer.png

arrow_up_footer.png

774 ms

mainnavbg.jpg

mainnavbg.jpg

761 ms

navsep.png

navsep.png

765 ms

headershadow.png

headershadow.png

619 ms

mainmenushadow.png

mainmenushadow.png

691 ms

116 ms

loading.gif

loading.gif

684 ms

ecbedced-ef74-429e-ba1e-1979d9542754.js

ecbedced-ef74-429e-ba1e-1979d9542754.js

322 ms

ce28da13-e5ac-f494-8d05-39775f36d950_wf2_3.png

ce28da13-e5ac-f494-8d05-39775f36d950_wf2_3.png

131 ms

300lo.json

300lo.json

68 ms

counter.5524cceca805eb4b9b2b.js

counter.5524cceca805eb4b9b2b.js

10 ms

bt_start_07.jpg

bt_start_07.jpg

623 ms

sh.8e5f85691f9aaa082472a194.html

sh.8e5f85691f9aaa082472a194.html

37 ms

counter_bg.jpg

counter_bg.jpg

623 ms

bottomshadow.png

bottomshadow.png

636 ms

knebelbg.jpg

knebelbg.jpg

738 ms

overlay.png

overlay.png

704 ms

shares.json

shares.json

41 ms

37 ms

border.png

border.png

656 ms

controls.png

controls.png

619 ms

pixel

pixel

18 ms

blank.gif

blank.gif

12 ms

servicegetproactivegeodata

servicegetproactivegeodata

92 ms

help_red_left_de.png

help_red_left_de.png

99 ms

bullets.png

bullets.png

108 ms

Accessibility Review

knebel.de accessibility score

83

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

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

Best Practices

knebel.de best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

knebel.de SEO score

91

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

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

    DE

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-2

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Knebel.de can be misinterpreted by Google and other search engines. Our service has detected that German 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 Knebel.de main page’s claimed encoding is iso-8859-2. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

knebel.de

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