Tools & Wizards About Us
colibu.de screenshot

Report Summary

  • 66

    Performance

    Renders faster than
    79% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 79% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

colibu.de

Kinderlieder zum Mitsingen - das Kinderliederbuch für den Computer

Page Load Speed

2.7 sec in total

First Response

261 ms

Resources Loaded

2.3 sec

Page Rendered

91 ms

colibu.de screenshot

About Website

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

Kinder singen gerne Kinderlieder. Doch wie war gleich die Melodie, wie ging der Text. Unser schön gestaltetes Kinderliederbuch für den Computer hilft Ihnen ihre Kinder beim singen zu unterstützen.

Visit colibu.de

Key Findings

We analyzed Colibu.de page load time and found that the first response time was 261 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

colibu.de performance score

66

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

22/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

28/100

25%

SI (Speed Index)

Value7.0 s

32/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.0 s

87/100

10%

Network Requests Diagram

colibu.de

261 ms

colibu.de

462 ms

www.colibu.de

541 ms

m.css

142 ms

track2.js

639 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 95% of them (19 requests) were addressed to the original Colibu.de, 5% (1 request) were made to Sitetracker.to-find-out.de. The less responsive or slowest element that took the longest time to load (639 ms) relates to the external source Sitetracker.to-find-out.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 13.1 kB (15%)

Content Size

86.0 kB

After Optimization

72.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Colibu.de main page is 86.0 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. 15% of websites need less resources to load. Images take 72.9 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 8.8 kB

  • Original 11.4 kB
  • After minification 10.8 kB
  • After compression 2.6 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 8.8 kB or 77% of the original size.

Image Optimization

-4%

Potential reduce by 3.1 kB

  • Original 72.9 kB
  • After minification 69.8 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. Colibu images are well optimized though.

JavaScript Optimization

-12%

Potential reduce by 23 B

  • Original 199 B
  • After minification 199 B
  • After compression 176 B

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 23 B or 12% of the original size.

CSS Optimization

-77%

Potential reduce by 1.2 kB

  • Original 1.6 kB
  • After minification 969 B
  • After compression 354 B

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. Colibu.de needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 77% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

17

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Colibu. According to our analytics all requests are already optimized.

Network Requests Diagram

colibu.de

colibu.de

261 ms

colibu.de

colibu.de

462 ms

www.colibu.de

www.colibu.de

541 ms

m.css

m.css

142 ms

track2.js

track2.js

639 ms

p.gif

p.gif

297 ms

be.gif

be.gif

350 ms

bruederchen_komm_tanz_mit_mir.jpg

bruederchen_komm_tanz_mit_mir.jpg

352 ms

weisst_du_wieviel_sternlein_stehen.jpg

weisst_du_wieviel_sternlein_stehen.jpg

355 ms

es_tanzt_ein_bi-ba_butzemann.jpg

es_tanzt_ein_bi-ba_butzemann.jpg

354 ms

gruen_ja_gruen_sind_alle_meine_kleider.jpg

gruen_ja_gruen_sind_alle_meine_kleider.jpg

374 ms

hopp_hopp_hopp.jpg

hopp_hopp_hopp.jpg

425 ms

laterne_laterne.jpg

laterne_laterne.jpg

473 ms

haensel_und_gretel.jpg

haensel_und_gretel.jpg

483 ms

schlaf_kindchen_schlaf.jpg

schlaf_kindchen_schlaf.jpg

498 ms

haeschen_in_der_grube.jpg

haeschen_in_der_grube.jpg

477 ms

kunst-fuer-kinder.gif

kunst-fuer-kinder.gif

534 ms

mb.gif

mb.gif

543 ms

b1.gif

b1.gif

595 ms

b.gif

b.gif

600 ms

Accessibility Review

colibu.de accessibility score

92

Accessibility Issues

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

Best Practices

colibu.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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

colibu.de SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    DE

  • Encoding

    ISO-8859-1

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

colibu.de

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