Tools & Wizards About Us
wolkenatlas.de screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 42

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

wolkenatlas.de

Der Karlsruher Wolkenatlas - Wolken und Wetter - Fotografie

Page Load Speed

2.2 sec in total

First Response

265 ms

Resources Loaded

1.8 sec

Page Rendered

155 ms

wolkenatlas.de screenshot

About Website

Welcome to wolkenatlas.de homepage info - get ready to check Wolkenatlas best content right away, or after learning these important things about wolkenatlas.de

Der Karlsruher Wolkenatlas - Übersicht, Wolken - und Wetterfotografie Beschreibung der verschiedenen Wolkenarten, optischer und anderer Wetterphänomene sowie der Niederschlagsformen anhand von Fotos u...

Visit wolkenatlas.de

Key Findings

We analyzed Wolkenatlas.de page load time and found that the first response time was 265 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

wolkenatlas.de performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

65/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

88/100

25%

SI (Speed Index)

Value4.5 s

73/100

10%

TBT (Total Blocking Time)

Value1,720 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.132

81/100

15%

TTI (Time to Interactive)

Value7.8 s

45/100

10%

Network Requests Diagram

wolkenatlas.de

265 ms

wolkenatlas.de

532 ms

adsbygoogle.js

111 ms

brand

12 ms

webt03.gif

191 ms

Our browser made a total of 23 requests to load all elements on the main page. We found that 70% of them (16 requests) were addressed to the original Wolkenatlas.de, 9% (2 requests) were made to Pagead2.googlesyndication.com and 9% (2 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (532 ms) belongs to the original domain Wolkenatlas.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 15.1 kB (5%)

Content Size

313.7 kB

After Optimization

298.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Wolkenatlas.de main page is 313.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. Javascripts take 244.6 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 13.9 kB

  • Original 19.5 kB
  • After minification 18.4 kB
  • After compression 5.7 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. 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 13.9 kB or 71% of the original size.

Image Optimization

-2%

Potential reduce by 1.1 kB

  • Original 49.5 kB
  • After minification 48.5 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. Wolkenatlas images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 222 B

  • Original 244.6 kB
  • After minification 244.6 kB
  • After compression 244.4 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.

Requests Breakdown

We found no issues to fix!

Requests Now

20

After Optimization

20

  • AJAX
  • Images
  • JavaScript

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Wolkenatlas. According to our analytics all requests are already optimized.

Network Requests Diagram

wolkenatlas.de

wolkenatlas.de

265 ms

wolkenatlas.de

wolkenatlas.de

532 ms

adsbygoogle.js

adsbygoogle.js

111 ms

brand

brand

12 ms

webt03.gif

webt03.gif

191 ms

tlogo03.gif

tlogo03.gif

297 ms

back02.jpg

back02.jpg

304 ms

brandjs.js

brandjs.js

19 ms

branding.png

branding.png

19 ms

wolkenbuch_titel_vs.png

wolkenbuch_titel_vs.png

219 ms

wolkenbuch_seite001sm.png

wolkenbuch_seite001sm.png

231 ms

swo13414.jpg

swo13414.jpg

304 ms

swo11241.jpg

swo11241.jpg

313 ms

swo10045.jpg

swo10045.jpg

318 ms

swo14937.jpg

swo14937.jpg

320 ms

spk22.jpg

spk22.jpg

320 ms

swo09104.jpg

swo09104.jpg

337 ms

swo14613.jpg

swo14613.jpg

406 ms

swo10301.jpg

swo10301.jpg

439 ms

swo09712.jpg

swo09712.jpg

438 ms

show_ads_impl.js

show_ads_impl.js

296 ms

zrt_lookup.html

zrt_lookup.html

35 ms

ads

ads

520 ms

Accessibility Review

wolkenatlas.de accessibility score

69

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

wolkenatlas.de best practices score

42

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

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

wolkenatlas.de SEO score

62

Search Engine Optimization Advices

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

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Wolkenatlas.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Wolkenatlas.de main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

wolkenatlas.de

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