Tools & Wizards About Us
colibri-hotels.de screenshot

Report Summary

  • 66

    Performance

    Renders faster than
    79% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

colibri-hotels.de

Hotels weltweit, Hotel in Berlin, Hamburg, Köln, München, Prag, Rom

Page Load Speed

1.7 sec in total

First Response

343 ms

Resources Loaded

1.1 sec

Page Rendered

227 ms

colibri-hotels.de screenshot

About Website

Visit colibri-hotels.de now to see the best up-to-date Colibri Hotels content and also check out these interesting facts you probably never knew about colibri-hotels.de

Hotels weltweit, Hotel in Berlin, Hamburg, Köln, München, Prag, Rom

Visit colibri-hotels.de

Key Findings

We analyzed Colibri-hotels.de page load time and found that the first response time was 343 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

colibri-hotels.de performance score

66

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

78/100

25%

SI (Speed Index)

Value3.7 s

86/100

10%

TBT (Total Blocking Time)

Value860 ms

33/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value8.4 s

38/100

10%

Network Requests Diagram

colibri-hotels.de

343 ms

style.css

186 ms

dynCalendar.css

187 ms

browserSniffer.js

280 ms

dynCalendar.js

303 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 59% of them (23 requests) were addressed to the original Colibri-hotels.de, 13% (5 requests) were made to Pagead2.googlesyndication.com and 10% (4 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (416 ms) belongs to the original domain Colibri-hotels.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 54.9 kB (19%)

Content Size

289.0 kB

After Optimization

234.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Colibri-hotels.de main page is 289.0 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. 25% of websites need less resources to load. Images take 203.0 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 20.2 kB

  • Original 25.5 kB
  • After minification 20.9 kB
  • After compression 5.3 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 4.6 kB, which is 18% 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 20.2 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 356 B

  • Original 203.0 kB
  • After minification 202.7 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. Colibri Hotels images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 30.8 kB

  • Original 56.0 kB
  • After minification 44.2 kB
  • After compression 25.2 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 30.8 kB or 55% of the original size.

CSS Optimization

-80%

Potential reduce by 3.6 kB

  • Original 4.4 kB
  • After minification 3.5 kB
  • After compression 873 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. Colibri-hotels.de needs all CSS files to be minified and compressed as it can save up to 3.6 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (41%)

Requests Now

37

After Optimization

22

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Colibri Hotels. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

colibri-hotels.de

colibri-hotels.de

343 ms

style.css

style.css

186 ms

dynCalendar.css

dynCalendar.css

187 ms

browserSniffer.js

browserSniffer.js

280 ms

dynCalendar.js

dynCalendar.js

303 ms

show_ads.js

show_ads.js

5 ms

kopf-bg-2.jpg

kopf-bg-2.jpg

133 ms

colibri-hotel-buchen-2.jpg

colibri-hotel-buchen-2.jpg

284 ms

bg.jpg

bg.jpg

132 ms

menue-anfang.jpg

menue-anfang.jpg

132 ms

home-unten.jpg

home-unten.jpg

133 ms

hotelsuche-ohne.jpg

hotelsuche-ohne.jpg

187 ms

agb-ohne.jpg

agb-ohne.jpg

188 ms

adlon-neu2.jpg

adlon-neu2.jpg

205 ms

hauptstaedte.jpg

hauptstaedte.jpg

404 ms

suche.gif

suche.gif

214 ms

hotel-finden.jpg

hotel-finden.jpg

280 ms

gruppenbild2.jpg

gruppenbild2.jpg

281 ms

anhaenger.jpg

anhaenger.jpg

305 ms

gaertner.jpg

gaertner.jpg

416 ms

ca-pub-7149153030972913.js

ca-pub-7149153030972913.js

48 ms

zrt_lookup.html

zrt_lookup.html

38 ms

show_ads_impl.js

show_ads_impl.js

50 ms

shadow.jpg

shadow.jpg

359 ms

dynCalendar.gif

dynCalendar.gif

350 ms

ads

ads

168 ms

osd.js

osd.js

18 ms

ads

ads

202 ms

abg.js

abg.js

24 ms

m_js_controller.js

m_js_controller.js

4 ms

favicon

favicon

48 ms

s

s

18 ms

googlelogo_color_112x36dp.png

googlelogo_color_112x36dp.png

53 ms

nessie_icon_tiamat_white.png

nessie_icon_tiamat_white.png

23 ms

x_button_blue2.png

x_button_blue2.png

25 ms

hotelsuche-over.jpg

hotelsuche-over.jpg

95 ms

agb-over.jpg

agb-over.jpg

98 ms

ui

ui

61 ms

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

10 ms

Accessibility Review

colibri-hotels.de accessibility score

58

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

[aria-*] attributes do not match their roles

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

colibri-hotels.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

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

colibri-hotels.de SEO score

67

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 Colibri-hotels.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 Colibri-hotels.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

colibri-hotels.de

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