Access protherm.eu. Protherm - Your partner for heating and home comfort technology

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value4.3 s

76/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value7.0 s

53/100

10%

protherm.eu

249 ms

1927 ms

cf7b950d0dbc.js

556 ms

core.min.css

166 ms

herospace--sd.css

165 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 33% of them (3 requests) were addressed to the original Protherm.eu, 56% (5 requests) were made to Cdn01l.vaillant-group.com and 11% (1 request) were made to Cdn.consentmanager.net. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Protherm.eu.

Content Size

16.5 kB

After Optimization

4.7 kB

In fact, the total size of Protherm.eu main page is 16.5 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. 30% of websites need less resources to load. HTML takes 16.5 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 11.8 kB

Original 16.5 kB
After minification 16.4 kB
After compression 4.7 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 11.8 kB or 72% of the original size.

Requests Now

After Optimization

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Protherm. According to our analytics all requests are already optimized.

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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

Language and Encoding

Language Detected

EN
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Protherm.eu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Protherm.eu 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 Protherm. 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: