Tools & Wizards About Us
wasserwaermeluft.de screenshot

Report Summary

  • 61

    Performance

    Renders faster than
    76% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

wasserwaermeluft.de

Wasser Wärme Luft | Eine Seite des Zentralverbands SHK: wasserwaermeluft.de

Page Load Speed

3.6 sec in total

First Response

219 ms

Resources Loaded

3 sec

Page Rendered

365 ms

wasserwaermeluft.de screenshot

About Website

Click here to check amazing Wasser Waerme Luft content for Germany. Otherwise, check out these important facts you probably never knew about wasserwaermeluft.de

Fachbetrieb finden für Sanitär, Heizung, Klima. Eine der meist besuchten Webseiten zu Energie sparen, richtig Heizen, gutes Raumklima, Sanitäranlagen, Dach- und Fassadennutzung sowie Erneuerbaren Ener...

Visit wasserwaermeluft.de

Key Findings

We analyzed Wasserwaermeluft.de page load time and found that the first response time was 219 ms and then it took 3.3 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

wasserwaermeluft.de performance score

61

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

57/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

36/100

25%

SI (Speed Index)

Value5.0 s

63/100

10%

TBT (Total Blocking Time)

Value100 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.427

22/100

15%

TTI (Time to Interactive)

Value5.4 s

72/100

10%

Network Requests Diagram

wasserwaermeluft.de

219 ms

wasserwaermeluft.de

394 ms

www.wasserwaermeluft.de

546 ms

slick.css

93 ms

cookie_panel.css

187 ms

Our browser made a total of 73 requests to load all elements on the main page. We found that all of those requests were addressed to Wasserwaermeluft.de and no external sources were called. The less responsive or slowest element that took the longest time to load (903 ms) belongs to the original domain Wasserwaermeluft.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 154.4 kB (3%)

Content Size

6.0 MB

After Optimization

5.9 MB

  • HTML
  • Images

In fact, the total size of Wasserwaermeluft.de main page is 6.0 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. 45% of websites need less resources to load. Images take 6.0 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 67.0 kB

  • Original 77.7 kB
  • After minification 62.8 kB
  • After compression 10.7 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 14.9 kB, which is 19% 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 67.0 kB or 86% of the original size.

Image Optimization

-1%

Potential reduce by 87.4 kB

  • Original 6.0 MB
  • After minification 5.9 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. Wasser Waerme Luft images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 18 (26%)

Requests Now

69

After Optimization

51

  • Images
  • JavaScript
  • CSS

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wasser Waerme Luft. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

wasserwaermeluft.de

wasserwaermeluft.de

219 ms

wasserwaermeluft.de

wasserwaermeluft.de

394 ms

www.wasserwaermeluft.de

www.wasserwaermeluft.de

546 ms

slick.css

slick.css

93 ms

cookie_panel.css

cookie_panel.css

187 ms

4390644f7a.css

4390644f7a.css

281 ms

leaflet.css

leaflet.css

283 ms

style.css

style.css

283 ms

lightbox.css

lightbox.css

281 ms

main.css

main.css

285 ms

custom.css

custom.css

285 ms

jquery-3.5.1.min.js

jquery-3.5.1.min.js

481 ms

c941a7be3f.js

c941a7be3f.js

374 ms

om_cookie_main.js

om_cookie_main.js

374 ms

slick.min.js

slick.min.js

378 ms

jquery.datetimepicker.min.js

jquery.datetimepicker.min.js

379 ms

parsley.min.js

parsley.min.js

382 ms

Tabs.min.js

Tabs.min.js

477 ms

Form.min.js

Form.min.js

477 ms

leaflet.js

leaflet.js

590 ms

functions.js

functions.js

478 ms

lightbox.min.js

lightbox.min.js

523 ms

main.js

main.js

578 ms

logo.svg

logo.svg

143 ms

logo-mobile.svg

logo-mobile.svg

140 ms

navmotiv_barrierefreies-bad.jpg

navmotiv_barrierefreies-bad.jpg

281 ms

navmotiv_neues-bad.jpg

navmotiv_neues-bad.jpg

290 ms

navmotiv_bad-renovieren.jpg

navmotiv_bad-renovieren.jpg

423 ms

navmotiv_wasser-sparen.jpg

navmotiv_wasser-sparen.jpg

259 ms

navmotiv_erneuerbare-energien.jpg

navmotiv_erneuerbare-energien.jpg

291 ms

csm_waermepumpe_d1d2975c24.jpg

csm_waermepumpe_d1d2975c24.jpg

467 ms

Beratung_zur_Heizungswartung.jpg

Beratung_zur_Heizungswartung.jpg

354 ms

navmotiv_oel-und-gas.jpg

navmotiv_oel-und-gas.jpg

468 ms

navmotiv_kraf-waerme-kopplung.jpg

navmotiv_kraf-waerme-kopplung.jpg

396 ms

navmotiv_kamin-und-kachelofen.jpg

navmotiv_kamin-und-kachelofen.jpg

397 ms

navmotiv_energie-sparen.jpg

navmotiv_energie-sparen.jpg

451 ms

navmotiv_wartung.jpg

navmotiv_wartung.jpg

492 ms

navmotiv_richtig-lueften.jpg

navmotiv_richtig-lueften.jpg

496 ms

navmotiv_klimaanlage.jpg

navmotiv_klimaanlage.jpg

524 ms

navmotiv_lueftungsanlage.jpg

navmotiv_lueftungsanlage.jpg

550 ms

navmotiv_zentralstaubsauger.jpg

navmotiv_zentralstaubsauger.jpg

572 ms

navmotiv_metalldach.jpg

navmotiv_metalldach.jpg

577 ms

navmotiv_dachentwaesserung.jpg

navmotiv_dachentwaesserung.jpg

592 ms

navmotiv_handwerkersuche.jpg

navmotiv_handwerkersuche.jpg

600 ms

navmotiv_hygienekodex.jpg

navmotiv_hygienekodex.jpg

626 ms

navmotiv_online-energiespar-ratgeber.jpg

navmotiv_online-energiespar-ratgeber.jpg

650 ms

navmotiv_rund-ums-haus.jpg

navmotiv_rund-ums-haus.jpg

672 ms

navmotiv_foerdermittel.jpg

navmotiv_foerdermittel.jpg

678 ms

navmotiv_impressum.jpg

navmotiv_impressum.jpg

693 ms

navmotiv_datenschutz.jpg

navmotiv_datenschutz.jpg

704 ms

navmotiv_kontakt.jpg

navmotiv_kontakt.jpg

735 ms

navmotiv_newsfeed.jpg

navmotiv_newsfeed.jpg

750 ms

slider_handwerkersuche.jpg

slider_handwerkersuche.jpg

876 ms

serviceportal_wwl_slider.jpeg

serviceportal_wwl_slider.jpeg

804 ms

slider_erneuerbare-energien.jpg

slider_erneuerbare-energien.jpg

899 ms

slider_newsletter.jpg

slider_newsletter.jpg

903 ms

teaser_handwerkersuche.jpg

teaser_handwerkersuche.jpg

781 ms

cc-icons.ttf

cc-icons.ttf

812 ms

Grosseltern_Bad_0405_72dpi_02.jpg

Grosseltern_Bad_0405_72dpi_02.jpg

873 ms

teaser_energie-sparen.jpg

teaser_energie-sparen.jpg

803 ms

teaser_wartung.jpg

teaser_wartung.jpg

836 ms

csm_tagdesbades24klein_e8d816b2f5.png

csm_tagdesbades24klein_e8d816b2f5.png

710 ms

csm_teaser_heizungs-check_cf748d69d5.jpg

csm_teaser_heizungs-check_cf748d69d5.jpg

727 ms

csm_Heizungs-check_66a26bd9b3.jpg

csm_Heizungs-check_66a26bd9b3.jpg

711 ms

header_wwl_serviceportal_1.jpeg

header_wwl_serviceportal_1.jpeg

758 ms

teaser_heizungs-check.jpg

teaser_heizungs-check.jpg

765 ms

L_001103_72dpi.jpg

L_001103_72dpi.jpg

897 ms

Corona-Bad-Felsner2.jpg

Corona-Bad-Felsner2.jpg

788 ms

zzstAnlagenm.jpg

zzstAnlagenm.jpg

758 ms

prev.png

prev.png

651 ms

next.png

next.png

675 ms

loading.gif

loading.gif

727 ms

close.png

close.png

720 ms

Accessibility Review

wasserwaermeluft.de accessibility score

96

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

Links do not have a discernible name

Best Practices

wasserwaermeluft.de best practices score

92

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

Page has valid source maps

SEO Factors

wasserwaermeluft.de SEO score

90

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Wasserwaermeluft.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Wasserwaermeluft.de 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

wasserwaermeluft.de

Open Graph description is not detected on the main page of Wasser Waerme Luft. 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: