Tools & Wizards About Us
schlaf.de screenshot

Report Summary

  • 7

    Performance

    Renders faster than
    22% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

schlaf.de

Schlaf.de - Vertrauenswürdige Informationen zur Schlafgesundheit

Page Load Speed

2.9 sec in total

First Response

90 ms

Resources Loaded

2 sec

Page Rendered

775 ms

schlaf.de screenshot

About Website

Click here to check amazing Schlaf content for Germany. Otherwise, check out these important facts you probably never knew about schlaf.de

Schlaf.de ist die erste Anlaufstelle für wissenschaftlich fundierte, medizinisch geprüfte Informationen zur Schlafgesundheit.

Visit schlaf.de

Key Findings

We analyzed Schlaf.de page load time and found that the first response time was 90 ms and then it took 2.8 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

schlaf.de performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

17/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value10.4 s

8/100

10%

TBT (Total Blocking Time)

Value6,090 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.901

3/100

15%

TTI (Time to Interactive)

Value20.7 s

2/100

10%

Network Requests Diagram

schlaf.de

90 ms

www.schlaf.de

149 ms

www.schlaf.de

114 ms

css

63 ms

sleep-calculator.js

27 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 92% of them (77 requests) were addressed to the original Schlaf.de, 2% (2 requests) were made to Googletagmanager.com and 2% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (658 ms) relates to the external source Js-eu1.hsforms.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 126.8 kB (12%)

Content Size

1.0 MB

After Optimization

914.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Schlaf.de main page is 1.0 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 466.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 124.8 kB

  • Original 154.2 kB
  • After minification 148.0 kB
  • After compression 29.4 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 124.8 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 466.6 kB
  • After minification 466.6 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. Schlaf images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.0 kB

  • Original 229.8 kB
  • After minification 229.8 kB
  • After compression 228.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-1%

Potential reduce by 986 B

  • Original 191.0 kB
  • After minification 190.4 kB
  • After compression 190.0 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. Schlaf.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 54 (69%)

Requests Now

78

After Optimization

24

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Schlaf. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 24 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

schlaf.de

schlaf.de

90 ms

www.schlaf.de

www.schlaf.de

149 ms

www.schlaf.de

www.schlaf.de

114 ms

css

css

63 ms

sleep-calculator.js

sleep-calculator.js

27 ms

jquery-3.6.0.min.js

jquery-3.6.0.min.js

34 ms

jquery.min.js

jquery.min.js

48 ms

jquery-migrate.min.js

jquery-migrate.min.js

31 ms

cookie-law-info-public.js

cookie-law-info-public.js

64 ms

modernizr.custom.js

modernizr.custom.js

30 ms

adsbygoogle.js

adsbygoogle.js

130 ms

v2.js

v2.js

658 ms

jquery.flexslider.min.js

jquery.flexslider.min.js

58 ms

owl.carousel.min.js

owl.carousel.min.js

59 ms

cloud-zoom.1.0.2.min.js

cloud-zoom.1.0.2.min.js

57 ms

jquery.countdown.min.js

jquery.countdown.min.js

58 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

60 ms

jquery.appear.min.js

jquery.appear.min.js

89 ms

typed.min.js

typed.min.js

89 ms

jquery.nice-select.min.js

jquery.nice-select.min.js

88 ms

isInViewport.min.js

isInViewport.min.js

89 ms

helpful.js

helpful.js

107 ms

core.min.js

core.min.js

118 ms

tabs.min.js

tabs.min.js

108 ms

rigid-front.js

rigid-front.js

109 ms

rigid-front.js

rigid-front.js

106 ms

imagesloaded.min.js

imagesloaded.min.js

107 ms

jquery.countdown-de.js

jquery.countdown-de.js

115 ms

underscore.min.js

underscore.min.js

116 ms

wp-util.min.js

wp-util.min.js

122 ms

rigid-libs-config.min.js

rigid-libs-config.min.js

121 ms

js_composer_front.min.js

js_composer_front.min.js

121 ms

vc-waypoints.min.js

vc-waypoints.min.js

121 ms

lazyload.min.js

lazyload.min.js

120 ms

gtm.js

gtm.js

101 ms

logo-schlaf.de-header.png

logo-schlaf.de-header.png

79 ms

frauen-schlaf.jpg

frauen-schlaf.jpg

176 ms

Zusammen-mit-dem-Baby-schlafen-home.jpg

Zusammen-mit-dem-Baby-schlafen-home.jpg

182 ms

Schlafmaske-auf-rosa-Pastellhintergrund-mit-goldenen-Sternen.jpg

Schlafmaske-auf-rosa-Pastellhintergrund-mit-goldenen-Sternen.jpg

177 ms

Umgebung-des-Schlafzimmers.jpg

Umgebung-des-Schlafzimmers.jpg

281 ms

Allergien-und-Schlaf-Home.jpg

Allergien-und-Schlaf-Home.jpg

177 ms

Ernaehrung-und-Schlaf-Home.jpg

Ernaehrung-und-Schlaf-Home.jpg

316 ms

Wie-funktioniert-der-zirkadiane-Rhythmus.jpg

Wie-funktioniert-der-zirkadiane-Rhythmus.jpg

406 ms

Koerperliche-Aktivitaet-und-Schlaf-Home.jpg

Koerperliche-Aktivitaet-und-Schlaf-Home.jpg

308 ms

Schlafentzug-Home.jpg

Schlafentzug-Home.jpg

528 ms

Wecker-auf-pastellrosa-News-Hintergrund.jpg

Wecker-auf-pastellrosa-News-Hintergrund.jpg

271 ms

schlafrechner.css

schlafrechner.css

264 ms

exitintentpopup.css

exitintentpopup.css

269 ms

cf7ic-style.css

cf7ic-style.css

269 ms

style.min.css

style.min.css

294 ms

cookie-law-info-public.css

cookie-law-info-public.css

303 ms

cookie-law-info-gdpr.css

cookie-law-info-gdpr.css

307 ms

flexslider.min.css

flexslider.min.css

304 ms

owl.carousel.min.css

owl.carousel.min.css

360 ms

owl.theme.default.min.css

owl.theme.default.min.css

357 ms

animate.css

animate.css

352 ms

cloud-zoom.css

cloud-zoom.css

349 ms

magnific-popup.css

magnific-popup.css

361 ms

base.css

base.css

360 ms

style.css

style.css

363 ms

style.css

style.css

362 ms

style.css

style.css

480 ms

rigid-responsive.css

rigid-responsive.css

377 ms

js_composer.min.css

js_composer.min.css

474 ms

font

font

45 ms

js

js

63 ms

fa-brands-400.woff

fa-brands-400.woff

328 ms

fa-regular-400.woff

fa-regular-400.woff

326 ms

fa-solid-900.woff

fa-solid-900.woff

391 ms

font

font

5 ms

v4-shims.min.css

v4-shims.min.css

43 ms

Kurzanleitung-fuer-besseren-Schlaf.jpg

Kurzanleitung-fuer-besseren-Schlaf.jpg

114 ms

cards.png

cards.png

92 ms

schoenes-Paar-liegt-in-einem-Bett.jpg

schoenes-Paar-liegt-in-einem-Bett.jpg

94 ms

Verstehe-deinen-zirkadianen-Rhythmus.jpg

Verstehe-deinen-zirkadianen-Rhythmus.jpg

101 ms

Ernaehrung-und-Bewegung.jpg

Ernaehrung-und-Bewegung.jpg

90 ms

Ein-laechelnder-Mann-im-Bett.jpg

Ein-laechelnder-Mann-im-Bett.jpg

91 ms

Schlafzimmer.jpg

Schlafzimmer.jpg

91 ms

junge-Frau-im-Schlafanzug-sitzt-auf-dem-Bett-und-hat-Nackenschmerzen.jpg

junge-Frau-im-Schlafanzug-sitzt-auf-dem-Bett-und-hat-Nackenschmerzen.jpg

92 ms

mangopay-tc-logo.da6d1980.png

mangopay-tc-logo.da6d1980.png

259 ms

animate.min.css

animate.min.css

31 ms

cookie-law-info-table.css

cookie-law-info-table.css

69 ms

all.min.css

all.min.css

26 ms

style.css

style.css

32 ms

Accessibility Review

schlaf.de accessibility score

81

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

schlaf.de best practices score

75

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

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

schlaf.de SEO score

86

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

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 Schlaf.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 Schlaf.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

schlaf.de

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