Tools & Wizards About Us
prefa.de screenshot

Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

prefa.de

PREFA Deutschland | PREFA

Page Load Speed

13.8 sec in total

First Response

380 ms

Resources Loaded

11.6 sec

Page Rendered

1.9 sec

prefa.de screenshot

About Website

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

PREFA - stark wie ein Stier! Hochwertige und wartungsarme Produkte aus Aluminium für Dach, Solar, Fassade und Hochwasserschutz, mit 40 Jahre Garantie.

Visit prefa.de

Key Findings

We analyzed Prefa.de page load time and found that the first response time was 380 ms and then it took 13.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

prefa.de performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

38/100

25%

SI (Speed Index)

Value4.5 s

72/100

10%

TBT (Total Blocking Time)

Value470 ms

60/100

30%

CLS (Cumulative Layout Shift)

Value0.151

75/100

15%

TTI (Time to Interactive)

Value5.0 s

76/100

10%

Network Requests Diagram

prefa.de

380 ms

prefa.de

368 ms

www.prefa.de

669 ms

styles.abf872c9.css

363 ms

runtime.afcf1f81.js

269 ms

Our browser made a total of 40 requests to load all elements on the main page. We found that all of those requests were addressed to Prefa.de and no external sources were called. The less responsive or slowest element that took the longest time to load (9.7 sec) belongs to the original domain Prefa.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 358.0 kB (4%)

Content Size

8.5 MB

After Optimization

8.1 MB

  • HTML
  • Images

In fact, the total size of Prefa.de 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. 40% of websites need less resources to load. Images take 8.1 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 352.4 kB

  • Original 387.6 kB
  • After minification 270.4 kB
  • After compression 35.1 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 117.2 kB, which is 30% 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 352.4 kB or 91% of the original size.

Image Optimization

-0%

Potential reduce by 5.6 kB

  • Original 8.1 MB
  • After minification 8.1 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. PREFA images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 4 (12%)

Requests Now

33

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of PREFA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

prefa.de

prefa.de

380 ms

prefa.de

prefa.de

368 ms

www.prefa.de

www.prefa.de

669 ms

styles.abf872c9.css

styles.abf872c9.css

363 ms

runtime.afcf1f81.js

runtime.afcf1f81.js

269 ms

styles.e0d2c481.js

styles.e0d2c481.js

268 ms

vendor.25c2b2ff.js

vendor.25c2b2ff.js

451 ms

main.e60425ad.js

main.e60425ad.js

274 ms

cookieOptin.css

cookieOptin.css

399 ms

cookieOptin.js

cookieOptin.js

454 ms

csm_PREFA-Prefalz-schwarz-Holzfassade-Bourg-St-Pierre-Schweiz-2_789ef3683a.jpg

csm_PREFA-Prefalz-schwarz-Holzfassade-Bourg-St-Pierre-Schweiz-2_789ef3683a.jpg

802 ms

csm_PREFA-Vorteile-gute-Gruende-kl_ac15b7cee0.jpg

csm_PREFA-Vorteile-gute-Gruende-kl_ac15b7cee0.jpg

1063 ms

csm_PREFA_Firmengebaeude_Wasungen_DE_88b122aced.png

csm_PREFA_Firmengebaeude_Wasungen_DE_88b122aced.png

804 ms

csm_PREFA-Mitarbeiter-Zentrale-Marktl-Kontakt_44e25def67.jpg

csm_PREFA-Mitarbeiter-Zentrale-Marktl-Kontakt_44e25def67.jpg

720 ms

csm_poster_4e6068edcb.jpg

csm_poster_4e6068edcb.jpg

544 ms

csm_PREFA-Sembrancher-Rausis-et-Cinquanta-Dachplatte-R16-steingrau-Chalet-Fabrice_eb4e2cc7cb.jpg

csm_PREFA-Sembrancher-Rausis-et-Cinquanta-Dachplatte-R16-steingrau-Chalet-Fabrice_eb4e2cc7cb.jpg

1264 ms

csm_PREFA-SdingX-Produktzugang_0e3c79923c.jpg

csm_PREFA-SdingX-Produktzugang_0e3c79923c.jpg

1075 ms

csm_Keine-Dachdurchdringung_-keine-Leitungskanaele_cd42bf8d29.png

csm_Keine-Dachdurchdringung_-keine-Leitungskanaele_cd42bf8d29.png

1436 ms

csm_PREFA_Dachentaesserung-braun_357e215b6f.jpg

csm_PREFA_Dachentaesserung-braun_357e215b6f.jpg

1331 ms

csm_PREFA-Hochwasserschutz_a3f5fb5903.jpg

csm_PREFA-Hochwasserschutz_a3f5fb5903.jpg

1250 ms

csm_PREFA_Baender-und-Bleche_a09915a612.jpg

csm_PREFA_Baender-und-Bleche_a09915a612.jpg

1424 ms

csm_PREFA-Komplettsystem-SDP-und-Aufdach_356c2cd30e.png

csm_PREFA-Komplettsystem-SDP-und-Aufdach_356c2cd30e.png

2047 ms

csm_PREFA-Dach-Fassade-Vorteil-40-Jahre-Garantie_cdb7d523af.png

csm_PREFA-Dach-Fassade-Vorteil-40-Jahre-Garantie_cdb7d523af.png

1516 ms

csm_PREFA-Dach-Fassade-Vorteil-komplettsystem_0dad7a211a.png

csm_PREFA-Dach-Fassade-Vorteil-komplettsystem_0dad7a211a.png

1529 ms

csm_Die-Kraft-der-Sonne-nuetzen_grau_2f5b91704c.png

csm_Die-Kraft-der-Sonne-nuetzen_grau_2f5b91704c.png

1600 ms

csm_PREFA-Referenzen-Inspiration-Galerie-Bad-Muenstereifel_dc63873b16.jpg

csm_PREFA-Referenzen-Inspiration-Galerie-Bad-Muenstereifel_dc63873b16.jpg

2046 ms

csm_Konfigurator-Haus-Farben-Produkte-Gestaltung_005e7da8f7.jpg

csm_Konfigurator-Haus-Farben-Produkte-Gestaltung_005e7da8f7.jpg

2249 ms

csm_PREFA-Prospekte-bestellen-Infomaterial-Komplettsystem_b33726c051.jpg

csm_PREFA-Prospekte-bestellen-Infomaterial-Komplettsystem_b33726c051.jpg

2226 ms

csm_PREFA-Angebot-einholen-Baubesprechung-Baustelle_77da9a4017.jpg

csm_PREFA-Angebot-einholen-Baubesprechung-Baustelle_77da9a4017.jpg

2153 ms

csm_PREFA-Fotoservice-Fotomontage-kostenlos_1161f1c3c5.jpg

csm_PREFA-Fotoservice-Fotomontage-kostenlos_1161f1c3c5.jpg

2227 ms

csm_PREFA-Startseite-ZG-Bauherren-web_c9f4b1c754.jpg

csm_PREFA-Startseite-ZG-Bauherren-web_c9f4b1c754.jpg

2935 ms

csm_PREFA-Startseite-ZG-Verarbeiter-web_a5871f779d.jpg

csm_PREFA-Startseite-ZG-Verarbeiter-web_a5871f779d.jpg

2498 ms

csm_PREFA-Architekt-Engin-Demirci-Sion_4144e19f4c.jpg

csm_PREFA-Architekt-Engin-Demirci-Sion_4144e19f4c.jpg

2601 ms

csm_PREFA-Hochwasserschutz-EFH-Schwaz-02_51b4ff2326.jpg

csm_PREFA-Hochwasserschutz-EFH-Schwaz-02_51b4ff2326.jpg

9695 ms

csm_PREFA-Fassade-Prefalz-Silbermetallic-Sanierung-Reihenhaus-Muenchen-01_c3c57cf4a6.jpg

csm_PREFA-Fassade-Prefalz-Silbermetallic-Sanierung-Reihenhaus-Muenchen-01_c3c57cf4a6.jpg

3055 ms

csm_PREFA-Karrieremesse-Schmalkalden_f087a57436.jpg

csm_PREFA-Karrieremesse-Schmalkalden_f087a57436.jpg

2697 ms

font.ccdd72d0.woff

font.ccdd72d0.woff

2737 ms

font.754a2f4a.woff

font.754a2f4a.woff

2913 ms

roboto-regular.ae804dc0.woff

roboto-regular.ae804dc0.woff

2940 ms

roboto-bold.8aba6dc5.woff

roboto-bold.8aba6dc5.woff

3108 ms

Accessibility Review

prefa.de accessibility score

98

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.

Best Practices

prefa.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

SEO Factors

prefa.de SEO score

98

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Prefa.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 Prefa.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

prefa.de

Open Graph data is detected on the main page of PREFA. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: