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About Website

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

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name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

90/100

25%

SI (Speed Index)

Value3.2 s

91/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.071

96/100

15%

TTI (Time to Interactive)

Value2.8 s

97/100

10%

www.mimeo.de

368 ms

language-selector.css

150 ms

cli-style.css

143 ms

bootstrap.min.css

536 ms

mimeo-bootstrap-custom.min.css

212 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Koebcke.de, 34% (25 requests) were made to Mimeo.de and 7% (5 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (613 ms) relates to the external source Mimeo.de.

Content Size

3.1 MB

After Optimization

2.3 MB

In fact, the total size of Koebcke.de main page is 3.1 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. 55% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 46.9 kB

Original 57.5 kB
After minification 53.0 kB
After compression 10.6 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 46.9 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 15.4 kB

Original 2.0 MB
After minification 2.0 MB

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. Koebcke images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 526.6 kB

Original 753.4 kB
After minification 747.4 kB
After compression 226.7 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 526.6 kB or 70% of the original size.

CSS Optimization

-81%

Potential reduce by 214.2 kB

Original 263.3 kB
After minification 260.5 kB
After compression 49.1 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. Koebcke.de needs all CSS files to be minified and compressed as it can save up to 214.2 kB or 81% of the original size.

Requests Now

After Optimization

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Koebcke. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

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

Image elements do not have [alt] attributes

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

Search Engine Optimization Advices

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

High

Page is blocked from indexing

High

robots.txt is not valid

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

FR
Language Claimed

DE
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Koebcke.de can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it does not match the claimed German language. Our system also found out that Koebcke.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

koebcke.de

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

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Performance

Accessibility

Best Practices

SEO

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Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)