Tools & Wizards About Us
rolf-fensterbau.de screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

rolf-fensterbau.de

Fenster, Balkontüren, Haustüren Hersteller | Rolf Fensterbau

Page Load Speed

5.5 sec in total

First Response

242 ms

Resources Loaded

4.8 sec

Page Rendered

490 ms

rolf-fensterbau.de screenshot

About Website

Visit rolf-fensterbau.de now to see the best up-to-date Rolf Fensterbau content and also check out these interesting facts you probably never knew about rolf-fensterbau.de

Rolf Fensterbau - Fenster + Haustüren mit Montage◄ regionaler Fenster und Türenhersteller♥ Über 100 Mitarbeiter✓ 40 Jahre Erfahrung✓ Qualitätsprodukte♥

Visit rolf-fensterbau.de

Key Findings

We analyzed Rolf-fensterbau.de page load time and found that the first response time was 242 ms and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

rolf-fensterbau.de performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

22/100

10%

LCP (Largest Contentful Paint)

Value12.9 s

0/100

25%

SI (Speed Index)

Value8.4 s

18/100

10%

TBT (Total Blocking Time)

Value1,520 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0.018

100/100

15%

TTI (Time to Interactive)

Value16.2 s

5/100

10%

Network Requests Diagram

rolf-fensterbau.de

242 ms

rolf-fensterbau.de

600 ms

calendar.css

184 ms

web.css

277 ms

gallery.css

280 ms

Our browser made a total of 214 requests to load all elements on the main page. We found that 97% of them (207 requests) were addressed to the original Rolf-fensterbau.de, 1% (3 requests) were made to Fonts.gstatic.com and 0% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (854 ms) belongs to the original domain Rolf-fensterbau.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 917.1 kB (11%)

Content Size

8.6 MB

After Optimization

7.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rolf-fensterbau.de main page is 8.6 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. 70% of websites need less resources to load. Images take 7.6 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 143.4 kB

  • Original 166.9 kB
  • After minification 153.0 kB
  • After compression 23.5 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 143.4 kB or 86% of the original size.

Image Optimization

-6%

Potential reduce by 494.1 kB

  • Original 7.6 MB
  • After minification 7.1 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. Rolf Fensterbau images are well optimized though.

JavaScript Optimization

-27%

Potential reduce by 156.6 kB

  • Original 573.9 kB
  • After minification 569.6 kB
  • After compression 417.3 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 156.6 kB or 27% of the original size.

CSS Optimization

-53%

Potential reduce by 123.0 kB

  • Original 230.8 kB
  • After minification 110.4 kB
  • After compression 107.8 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. Rolf-fensterbau.de needs all CSS files to be minified and compressed as it can save up to 123.0 kB or 53% of the original size.

Requests Breakdown

Number of requests can be reduced by 168 (81%)

Requests Now

208

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 208 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rolf Fensterbau. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 158 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rolf-fensterbau.de

rolf-fensterbau.de

242 ms

rolf-fensterbau.de

rolf-fensterbau.de

600 ms

calendar.css

calendar.css

184 ms

web.css

web.css

277 ms

gallery.css

gallery.css

280 ms

styles-m.css

styles-m.css

563 ms

form-builder.css

form-builder.css

465 ms

form-render.css

form-render.css

281 ms

chosen.min.css

chosen.min.css

282 ms

button.css

button.css

368 ms

prettyPhoto.css

prettyPhoto.css

371 ms

styles-l.css

styles-l.css

474 ms

require.js

require.js

470 ms

mixins.js

mixins.js

460 ms

requirejs-config.js

requirejs-config.js

466 ms

css

css

38 ms

script.js

script.js

529 ms

8ba4011abc074ace65cb904ef.js

8ba4011abc074ace65cb904ef.js

50 ms

widget_landscape_110_de_0.png

widget_landscape_110_de_0.png

184 ms

logo.png

logo.png

101 ms

Rolf_Flyout_Unternehmen_16-9-min_w_400_0.jpg

Rolf_Flyout_Unternehmen_16-9-min_w_400_0.jpg

103 ms

Rolf_Flyout_Produktseite_16-9-min_w_400_0.jpg

Rolf_Flyout_Produktseite_16-9-min_w_400_0.jpg

186 ms

Rolf_Flyout_Partnerbereich_16-9-min_w_400_0.jpg

Rolf_Flyout_Partnerbereich_16-9-min_w_400_0.jpg

102 ms

Rolf_Flyout_Service_angepasst-min_w_400_0.jpg

Rolf_Flyout_Service_angepasst-min_w_400_0.jpg

187 ms

Rolf_Flyout_Wissenswertes_16-9-min_w_400_0.jpg

Rolf_Flyout_Wissenswertes_16-9-min_w_400_0.jpg

101 ms

Rolf_Flyout_Referenzen_16-9-min_w_400_0.jpg

Rolf_Flyout_Referenzen_16-9-min_w_400_0.jpg

278 ms

2020-02_Rolf-Fensterbau-147_w_400_0.jpg

2020-02_Rolf-Fensterbau-147_w_400_0.jpg

189 ms

Baustelle.jpeg

Baustelle.jpeg

472 ms

Baustelle2_1.png

Baustelle2_1.png

379 ms

Baustelle2.png

Baustelle2.png

469 ms

Zufahrt_Hautpsstrasse.png

Zufahrt_Hautpsstrasse.png

473 ms

Rolf_Teaser_Startseite_Produkte-min-res2_w_1000_0.jpg

Rolf_Teaser_Startseite_Produkte-min-res2_w_1000_0.jpg

285 ms

Rolf_Teaser_Startseite_Wissenswertes-min-res_w_1000_0.jpg

Rolf_Teaser_Startseite_Wissenswertes-min-res_w_1000_0.jpg

463 ms

Rolf_Teaser_Startseite_Verantwortung-min-res_w_1000_0.jpg

Rolf_Teaser_Startseite_Verantwortung-min-res_w_1000_0.jpg

381 ms

Rolf_Teaser_Startseite_Geschichte-min-res_w_1000_0.jpg

Rolf_Teaser_Startseite_Geschichte-min-res_w_1000_0.jpg

474 ms

Rolf_Teaser_Startseite_Karriere2-min-res_w_1000_0.jpg

Rolf_Teaser_Startseite_Karriere2-min-res_w_1000_0.jpg

475 ms

20231217_Gruppe_2_w_1000_0.jpeg

20231217_Gruppe_2_w_1000_0.jpeg

651 ms

Rolf_Teaser_Startseite_Planung-min-res_w_1000_0.jpg

Rolf_Teaser_Startseite_Planung-min-res_w_1000_0.jpg

562 ms

Rolf_Teaser_Startseite_Produktion-min-res_w_1000_0.jpg

Rolf_Teaser_Startseite_Produktion-min-res_w_1000_0.jpg

564 ms

Rolf_Teaser_Startseite_Service-min-res_w_1000_0.jpg

Rolf_Teaser_Startseite_Service-min-res_w_1000_0.jpg

566 ms

Rolf_Teaser_Startseite_Montage_zugeschnitten-min-res_w_1000_0.jpg

Rolf_Teaser_Startseite_Montage_zugeschnitten-min-res_w_1000_0.jpg

568 ms

Solaranlage_Rolf_Fensterbau_1.png

Solaranlage_Rolf_Fensterbau_1.png

854 ms

Flutkatastrophe-hilfe_1.jpg

Flutkatastrophe-hilfe_1.jpg

656 ms

Querbeat_1.PNG

Querbeat_1.PNG

669 ms

v-fuge-profil.jpg

v-fuge-profil.jpg

660 ms

Nikolaus.jpg

Nikolaus.jpg

666 ms

footer_social_facebook.png

footer_social_facebook.png

743 ms

footer_social_youtube.png

footer_social_youtube.png

748 ms

jquery.js

jquery.js

764 ms

common.js

common.js

756 ms

dataPost.js

dataPost.js

759 ms

bootstrap.js

bootstrap.js

833 ms

form-key-provider.js

form-key-provider.js

837 ms

mage-translation-dictionary.js

mage-translation-dictionary.js

850 ms

webpimages.js

webpimages.js

847 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWyosBO5Xk.ttf

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWyosBO5Xk.ttf

33 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyXsosBO5Xk.ttf

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyXsosBO5Xk.ttf

33 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyVVpcBO5Xk.ttf

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyVVpcBO5Xk.ttf

67 ms

lazysizes.min.js

lazysizes.min.js

764 ms

theme.js

theme.js

830 ms

rolf-accordion.js

rolf-accordion.js

835 ms

header.js

header.js

847 ms

widgets.js

widgets.js

765 ms

listing.js

listing.js

764 ms

modal-show.js

modal-show.js

770 ms

am-recaptcha.js

am-recaptcha.js

746 ms

theme-icons.woff

theme-icons.woff

745 ms

jquery-mixin.js

jquery-mixin.js

663 ms

ajax-loader.gif

ajax-loader.gif

661 ms

bg-footer.jpg

bg-footer.jpg

580 ms

domReady.js

domReady.js

289 ms

template.js

template.js

351 ms

confirm.js

confirm.js

358 ms

widget.js

widget.js

371 ms

jquery-migrate.js

jquery-migrate.js

357 ms

main.js

main.js

301 ms

bootstrap.js

bootstrap.js

307 ms

text.js

text.js

352 ms

modernizr-webp.js

modernizr-webp.js

353 ms

smart-keyboard-handler.js

smart-keyboard-handler.js

298 ms

mage.js

mage.js

299 ms

ie-class-fixer.js

ie-class-fixer.js

301 ms

accordion.js

accordion.js

302 ms

matchMedia.js

matchMedia.js

362 ms

compat.js

compat.js

360 ms

knockout.js

knockout.js

312 ms

underscore.js

underscore.js

302 ms

wrapper.js

wrapper.js

284 ms

translate.js

translate.js

213 ms

modal.js

modal.js

272 ms

version.js

version.js

261 ms

scripts.js

scripts.js

276 ms

knockout-es5.js

knockout-es5.js

274 ms

engine.js

engine.js

275 ms

bootstrap.js

bootstrap.js

276 ms

observable_array.js

observable_array.js

338 ms

bound-nodes.js

bound-nodes.js

344 ms

js-translation.json

js-translation.json

303 ms

Rolf_Banner_Startseite_16-9-min.jpg

Rolf_Banner_Startseite_16-9-min.jpg

381 ms

tabs.js

tabs.js

278 ms

core.js

core.js

211 ms

accordion.js

accordion.js

272 ms

autocomplete.js

autocomplete.js

277 ms

button.js

button.js

295 ms

datepicker.js

datepicker.js

303 ms

dialog.js

dialog.js

305 ms

draggable.js

draggable.js

364 ms

droppable.js

droppable.js

370 ms

effect-blind.js

effect-blind.js

386 ms

effect-bounce.js

effect-bounce.js

388 ms

effect-clip.js

effect-clip.js

393 ms

effect-drop.js

effect-drop.js

395 ms

effect-explode.js

effect-explode.js

456 ms

effect-fade.js

effect-fade.js

460 ms

effect-fold.js

effect-fold.js

477 ms

effect-highlight.js

effect-highlight.js

481 ms

effect-scale.js

effect-scale.js

485 ms

effect-pulsate.js

effect-pulsate.js

487 ms

effect-shake.js

effect-shake.js

547 ms

effect-slide.js

effect-slide.js

552 ms

effect-transfer.js

effect-transfer.js

568 ms

effect.js

effect.js

565 ms

menu.js

menu.js

558 ms

mouse.js

mouse.js

561 ms

position.js

position.js

610 ms

progressbar.js

progressbar.js

564 ms

resizable.js

resizable.js

575 ms

selectable.js

selectable.js

564 ms

selectmenu.js

selectmenu.js

563 ms

sortable.js

sortable.js

566 ms

spinner.js

spinner.js

619 ms

tabs.js

tabs.js

565 ms

timepicker.js

timepicker.js

577 ms

tooltip.js

tooltip.js

565 ms

modal-popup.html

modal-popup.html

562 ms

modal-slide.html

modal-slide.html

564 ms

modal-custom.html

modal-custom.html

558 ms

key-codes.js

key-codes.js

558 ms

z-index.js

z-index.js

560 ms

knockout-repeat.js

knockout-repeat.js

566 ms

knockout-fast-foreach.js

knockout-fast-foreach.js

557 ms

observable_source.js

observable_source.js

564 ms

renderer.js

renderer.js

558 ms

console-logger.js

console-logger.js

558 ms

resizable.js

resizable.js

560 ms

i18n.js

i18n.js

563 ms

scope.js

scope.js

560 ms

range.js

range.js

565 ms

mage-init.js

mage-init.js

559 ms

keyboard.js

keyboard.js

558 ms

optgroup.js

optgroup.js

561 ms

after-render.js

after-render.js

562 ms

autoselect.js

autoselect.js

560 ms

datepicker.js

datepicker.js

565 ms

outer_click.js

outer_click.js

559 ms

fadeVisible.js

fadeVisible.js

558 ms

collapsible.js

collapsible.js

561 ms

staticChecked.js

staticChecked.js

560 ms

simple-checked.js

simple-checked.js

561 ms

bind-html.js

bind-html.js

564 ms

tooltip.js

tooltip.js

558 ms

color-picker.js

color-picker.js

558 ms

events.js

events.js

560 ms

collapsible.js

collapsible.js

559 ms

data.js

data.js

560 ms

disable-selection.js

disable-selection.js

562 ms

focusable.js

focusable.js

558 ms

form.js

form.js

558 ms

ie.js

ie.js

557 ms

keycode.js

keycode.js

558 ms

labels.js

labels.js

562 ms

jquery-patch.js

jquery-patch.js

563 ms

plugin.js

plugin.js

558 ms

safe-active-element.js

safe-active-element.js

558 ms

safe-blur.js

safe-blur.js

558 ms

scroll-parent.js

scroll-parent.js

557 ms

tabbable.js

tabbable.js

562 ms

unique-id.js

unique-id.js

563 ms

controlgroup.js

controlgroup.js

559 ms

checkboxradio.js

checkboxradio.js

557 ms

effect-size.js

effect-size.js

558 ms

jquery-var-for-color.js

jquery-var-for-color.js

558 ms

jquery.color.js

jquery.color.js

564 ms

form-reset-mixin.js

form-reset-mixin.js

563 ms

class.js

class.js

559 ms

loader.js

loader.js

558 ms

local.js

local.js

559 ms

logger.js

logger.js

559 ms

entry-factory.js

entry-factory.js

564 ms

console-output-handler.js

console-output-handler.js

563 ms

formatter.js

formatter.js

559 ms

message-pool.js

message-pool.js

558 ms

levels-pool.js

levels-pool.js

558 ms

logger-utils.js

logger-utils.js

558 ms

async.js

async.js

564 ms

registry.js

registry.js

563 ms

main.js

main.js

558 ms

tooltip.html

tooltip.html

558 ms

spectrum.js

spectrum.js

559 ms

tinycolor.js

tinycolor.js

559 ms

jquery.storageapi.extended.js

jquery.storageapi.extended.js

564 ms

entry.js

entry.js

189 ms

moment.js

moment.js

184 ms

template.js

template.js

190 ms

dom-observer.js

dom-observer.js

168 ms

bindings.js

bindings.js

173 ms

arrays.js

arrays.js

129 ms

compare.js

compare.js

135 ms

misc.js

misc.js

183 ms

objects.js

objects.js

184 ms

strings.js

strings.js

206 ms

jquery.cookie.js

jquery.cookie.js

176 ms

jquery.storageapi.min.js

jquery.storageapi.min.js

187 ms

print.css

print.css

94 ms

Accessibility Review

rolf-fensterbau.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

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[role]s are not contained by their required parent element

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.

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

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

Best Practices

rolf-fensterbau.de best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

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

rolf-fensterbau.de SEO score

92

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

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 Rolf-fensterbau.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 Rolf-fensterbau.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

rolf-fensterbau.de

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