Tools & Wizards About Us
lueftungs-experte.de screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

lueftungs-experte.de

Page Load Speed

3.5 sec in total

First Response

369 ms

Resources Loaded

2.8 sec

Page Rendered

365 ms

lueftungs-experte.de screenshot

About Website

Welcome to lueftungs-experte.de homepage info - get ready to check Lueftungs Experte best content for Germany right away, or after learning these important things about lueftungs-experte.de

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Visit lueftungs-experte.de

Key Findings

We analyzed Lueftungs-experte.de page load time and found that the first response time was 369 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

lueftungs-experte.de performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

50/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value6.3 s

42/100

10%

TBT (Total Blocking Time)

Value290 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0.019

100/100

15%

TTI (Time to Interactive)

Value8.6 s

37/100

10%

Network Requests Diagram

lueftungs-experte.de

369 ms

www.lueftungs-experte.de

725 ms

superfish.css

204 ms

reset.css

208 ms

oxid.css

318 ms

Our browser made a total of 85 requests to load all elements on the main page. We found that 82% of them (70 requests) were addressed to the original Lueftungs-experte.de, 4% (3 requests) were made to Google.com and 4% (3 requests) were made to Widgets.trustedshops.com. The less responsive or slowest element that took the longest time to load (932 ms) belongs to the original domain Lueftungs-experte.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 785.1 kB (54%)

Content Size

1.5 MB

After Optimization

671.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lueftungs-experte.de main page is 1.5 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. 50% of websites need less resources to load. Javascripts take 628.4 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 65.0 kB

  • Original 75.2 kB
  • After minification 51.7 kB
  • After compression 10.1 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 23.4 kB, which is 31% 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 65.0 kB or 87% of the original size.

Image Optimization

-6%

Potential reduce by 24.7 kB

  • Original 448.6 kB
  • After minification 423.8 kB

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. Lueftungs Experte images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 440.4 kB

  • Original 628.4 kB
  • After minification 595.5 kB
  • After compression 188.0 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 440.4 kB or 70% of the original size.

CSS Optimization

-84%

Potential reduce by 255.0 kB

  • Original 304.0 kB
  • After minification 263.3 kB
  • After compression 49.0 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. Lueftungs-experte.de needs all CSS files to be minified and compressed as it can save up to 255.0 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (46%)

Requests Now

80

After Optimization

43

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 80 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lueftungs Experte. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lueftungs-experte.de

lueftungs-experte.de

369 ms

www.lueftungs-experte.de

www.lueftungs-experte.de

725 ms

superfish.css

superfish.css

204 ms

reset.css

reset.css

208 ms

oxid.css

oxid.css

318 ms

jscrollpane.css

jscrollpane.css

209 ms

nivoslider.css

nivoslider.css

211 ms

d3_ext_search.css

d3_ext_search.css

210 ms

conversion.js

conversion.js

20 ms

jquery.min.js

jquery.min.js

323 ms

jquery.cookie.js

jquery.cookie.js

213 ms

jquery-ui.min.js

jquery-ui.min.js

432 ms

hoverIntent.js

hoverIntent.js

252 ms

supersubs.js

supersubs.js

216 ms

superfish.js

superfish.js

337 ms

dynamicload.js

dynamicload.js

338 ms

nivoslider.js

nivoslider.js

337 ms

initnivo.js

initnivo.js

336 ms

oxcenterelementonhover.js

oxcenterelementonhover.js

426 ms

oxtopmenu.js

oxtopmenu.js

455 ms

oxmodalpopup.js

oxmodalpopup.js

456 ms

oxinputvalidator.js

oxinputvalidator.js

457 ms

oxinnerlabel.js

oxinnerlabel.js

453 ms

oxequalizer.js

oxequalizer.js

528 ms

analytics.js

analytics.js

34 ms

XC5F8546E127D434D09582FE5F5677AB8.gif

XC5F8546E127D434D09582FE5F5677AB8.gif

561 ms

bg.png

bg.png

354 ms

bg-air.png

bg-air.png

508 ms

x.png

x.png

364 ms

toplinks-divider.png

toplinks-divider.png

357 ms

trusted-shops-siegel.png

trusted-shops-siegel.png

364 ms

logo.png

logo.png

393 ms

cart-bg.png

cart-bg.png

400 ms

nav-arrow.png

nav-arrow.png

406 ms

cart.png

cart.png

465 ms

search.png

search.png

464 ms

kleinraumventilatoren-icon.png

kleinraumventilatoren-icon.png

495 ms

industrieventilatoren-icon.png

industrieventilatoren-icon.png

499 ms

lueftungsgitter-tellerventile-icon.png

lueftungsgitter-tellerventile-icon.png

511 ms

pvc-system-icon.png

pvc-system-icon.png

568 ms

wickelfalz-system-icon.png

wickelfalz-system-icon.png

568 ms

flexible-schlaeuche-icon.png

flexible-schlaeuche-icon.png

598 ms

elektronik-regler-zubehoer-icon.png

elektronik-regler-zubehoer-icon.png

603 ms

freundlicher-mann.png

freundlicher-mann.png

609 ms

kontakt-beratung.png

kontakt-beratung.png

614 ms

info-center.png

info-center.png

674 ms

sicher-einkaufen.png

sicher-einkaufen.png

673 ms

kleinraumventilatoren-slideshow.png

kleinraumventilatoren-slideshow.png

802 ms

industrieventilatoren-slideshow.png

industrieventilatoren-slideshow.png

807 ms

elektronik-regler-zubehoer-slideshow.png

elektronik-regler-zubehoer-slideshow.png

804 ms

collect

collect

8 ms

collect

collect

101 ms

js

js

54 ms

83 ms

neu-list.png

neu-list.png

633 ms

vents-ttsilent.jpg

vents-ttsilent.jpg

691 ms

vents-th-1-5-n.jpg

vents-th-1-5-n.jpg

691 ms

aktion-list.png

aktion-list.png

734 ms

vents-ifan-series-0.jpg

vents-ifan-series-0.jpg

794 ms

gtmp_compiled_mCYuC-C6xKk.js

gtmp_compiled_mCYuC-C6xKk.js

6 ms

32 ms

ga-audiences

ga-audiences

29 ms

vents-rs-1-5-n.jpg

vents-rs-1-5-n.jpg

706 ms

vents-quiet-series-0.jpg

vents-quiet-series-0.jpg

703 ms

vents-ttpro.jpg

vents-ttpro.jpg

704 ms

topseller-list.png

topseller-list.png

712 ms

vents-tt.jpg

vents-tt.jpg

716 ms

vents-ko-series-0.jpg

vents-ko-series-0.jpg

777 ms

XC5F8546E127D434D09582FE5F5677AB8.js

XC5F8546E127D434D09582FE5F5677AB8.js

79 ms

60 ms

pvc-lueftungsrohr.jpg

pvc-lueftungsrohr.jpg

642 ms

wickelfalzrohr.jpg

wickelfalzrohr.jpg

660 ms

vents-ov1.jpg

vents-ov1.jpg

659 ms

vents-rs-1-400.png

vents-rs-1-400.png

665 ms

vents-vkom.jpg

vents-vkom.jpg

670 ms

19 ms

vents-ld-series-0.jpg

vents-ld-series-0.jpg

696 ms

usms.jpg

usms.jpg

696 ms

versandarten-zahlungsmoeglichkeiten.png

versandarten-zahlungsmoeglichkeiten.png

714 ms

pro.png

pro.png

661 ms

www.lueftungs-experte.de

www.lueftungs-experte.de

932 ms

circle-blue.png

circle-blue.png

645 ms

circle-lightblue.png

circle-lightblue.png

700 ms

style.css

style.css

4 ms

badge_compressed.png

badge_compressed.png

2 ms

Accessibility Review

lueftungs-experte.de accessibility score

77

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

lueftungs-experte.de best practices score

67

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

SEO Factors

lueftungs-experte.de SEO score

64

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

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

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 Lueftungs-experte.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 Lueftungs-experte.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

lueftungs-experte.de

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