Access info-oberkassel.de. Boardinghouse Castell, Bonn

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

36/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

40/100

25%

SI (Speed Index)

Value21.1 s

0/100

10%

TBT (Total Blocking Time)

Value48,910 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value63.7 s

0/100

10%

info-oberkassel.de

374 ms

bgcolor.jpg

196 ms

tabspace5x5.gif

295 ms

header_caution_sign_verlauf.gif

301 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to Info-oberkassel.de and no external sources were called. The less responsive or slowest element that took the longest time to load (374 ms) belongs to the original domain Info-oberkassel.de.

Content Size

21.9 kB

After Optimization

5.2 kB

In fact, the total size of Info-oberkassel.de main page is 21.9 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 18.9 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 2.0 kB

Original 3.0 kB
After minification 2.6 kB
After compression 993 B

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 349 B, which is 12% 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 2.0 kB or 67% of the original size.

Image Optimization

-78%

Potential reduce by 14.7 kB

Original 18.9 kB
After minification 4.2 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. Obviously, Info Oberkassel needs image optimization as it can save up to 14.7 kB or 78% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Now

After Optimization

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Info Oberkassel. According to our analytics all requests are already optimized.

Accessibility Issues

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.

High

Buttons do not have an accessible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

DE
Language Claimed

N/A
Encoding

UTF-8

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

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