Access lueftungs-experte.de.

Report Summary

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

98/100

25%

SI (Speed Index)

Value2.7 s

97/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

lueftungs-experte.de

414 ms

lueftungs-experte.de

457 ms

offline.html

335 ms

Our browser made a total of 3 requests to load all elements on the main page. We found that all of those requests were addressed to Lueftungs-experte.de and no external sources were called. The less responsive or slowest element that took the longest time to load (457 ms) belongs to the original domain Lueftungs-experte.de.

Content Size

1.4 MB

After Optimization

662.5 kB

In fact, the total size of Lueftungs-experte.de main page is 1.4 MB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Javascripts take 629.6 kB which makes up the majority of the site volume.

HTML Optimization

-55%

Potential reduce by 508 B

Original 929 B
After minification 827 B
After compression 421 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 102 B, which is 11% 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 508 B or 55% of the original size.

Image Optimization

-6%

Potential reduce by 24.7 kB

Original 448.6 kB
After minification 423.8 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. Lueftungs Experte images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 440.4 kB

Original 629.6 kB
After minification 596.8 kB
After compression 189.2 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 440.4 kB or 70% of the original size.

CSS Optimization

-84%

Potential reduce by 255.0 kB

Original 304.0 kB
After minification 263.3 kB
After compression 49.0 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. Lueftungs-experte.de needs all CSS files to be minified and compressed as it can save up to 255.0 kB or 84% of the original size.

Requests Now

After Optimization

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

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

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

Document doesn't have a <title> element

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

High

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

Search Engine Optimization Advices

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

High

Document doesn't have a <title> element

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 Lueftungs-experte.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 Lueftungs-experte.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 Lueftungs Experte. 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: