5.4 sec in total
473 ms
4.4 sec
524 ms
Welcome to viessmann.pl homepage info - get ready to check Viessmann best content for Poland right away, or after learning these important things about viessmann.pl
Technika grzewcza, chłodnicza i wentylacyjna, która kształtuje pomieszczenia mieszkalne i chroni klimat. Kompleksowe rozwiązania firmy Viessmann.
Visit viessmann.plWe analyzed Viessmann.pl page load time and found that the first response time was 473 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
viessmann.pl performance score
name
value
score
weighting
Value4.4 s
16/100
10%
Value5.0 s
27/100
25%
Value27.7 s
0/100
10%
Value720 ms
41/100
30%
Value0.011
100/100
15%
Value14.5 s
8/100
10%
473 ms
1308 ms
197 ms
705 ms
199 ms
Our browser made a total of 64 requests to load all elements on the main page. We found that 73% of them (47 requests) were addressed to the original Viessmann.pl, 6% (4 requests) were made to Google-analytics.com and 5% (3 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Viessmann.pl.
Page size can be reduced by 907.6 kB (22%)
4.0 MB
3.1 MB
In fact, the total size of Viessmann.pl main page is 4.0 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. 30% of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.
Potential reduce by 77.9 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 77.9 kB or 82% of the original size.
Potential reduce by 32.5 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. Viessmann images are well optimized though.
Potential reduce by 422.1 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 422.1 kB or 66% of the original size.
Potential reduce by 375.1 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. Viessmann.pl needs all CSS files to be minified and compressed as it can save up to 375.1 kB or 74% of the original size.
Number of requests can be reduced by 18 (33%)
54
36
The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Viessmann. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.
viessmann.pl
473 ms
www.viessmann.pl
1308 ms
viessmann.base.fonts.latinExt.min.css
197 ms
viessmann.base.app.min.css
705 ms
global_js_snippet_head.data.js
199 ms
viessmann.base.lib.modernizr.min.js
308 ms
viessmann.base.lib.min.js
1092 ms
viessmann.base.app.min.js
781 ms
global_js_snippet_body.data.js
392 ms
trackingCode.js
60 ms
icon-wohngebaeude-white.png
107 ms
icon-gewerbe-white.png
105 ms
icon-industrie-white.png
102 ms
icon-kommunen-white.png
108 ms
konfigurator.jpg
591 ms
viessmann-logo.png
206 ms
Viessmann-Wohngebaeude-01.jpg
637 ms
Mittelkessel-XL.jpg
1298 ms
Kuehlmoebel-Gewerbe-XL.jpg
828 ms
Kuehl-_Tiefkuehlzellen.jpg
824 ms
Viessmann-Industrie.jpg
1200 ms
Kommune-Biogas-XL.jpg
1539 ms
Kachel_Community_Image%20Text%20Tile.jpg
857 ms
cennik.jpg
930 ms
Service_Offensive_312x350_f.jpg
1070 ms
Partner-vor-Ort.jpg
1071 ms
referenzen.jpg
1138 ms
przedluz-gwarancje.jpg
1135 ms
edelstahl-waermetauscher.jpg
1485 ms
Bedienungsanleitungen.jpg
1235 ms
Viessmann-App-Angebot.jpg
1242 ms
smog-krakow.jpg
1311 ms
smog-wroclaw.jpg
1435 ms
Viessmann-Sport-1s.jpg
1445 ms
erp-labeling.jpg
1507 ms
Login-Marktpartnerportal.jpg
1525 ms
Finanzierung.jpg
1630 ms
icon-footer-facebook-xl.png
1546 ms
icon-footer-youtube-xl.png
1589 ms
icon-footer-pinterest-xl.png
1615 ms
icon-footer-linkedin-xl.png
1633 ms
viessmann_logo_footer.png
1639 ms
UniversLTW02-45Obl.woff
1710 ms
UniversLTW02-55.woff
1761 ms
UniversLTW02-45.woff
1741 ms
UniversLTW02-57.woff
1739 ms
wtid.js
491 ms
analytics.js
21 ms
gtm.js
62 ms
collect
11 ms
collect
27 ms
collect
73 ms
conversion_async.js
28 ms
sm.js
1345 ms
dc.js
41 ms
42 ms
inpage_linkid.js
18 ms
ga-audiences
49 ms
37 ms
__utm.gif
15 ms
ga-audiences
20 ms
facebooktile.facebookTileContent.htx
701 ms
icon-kachel-facebook-xl.png
673 ms
dcs.gif
111 ms
viessmann.pl accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
viessmann.pl best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
viessmann.pl SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
Mobile Friendly
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/).
Impact
Issue
Document uses legible font sizes
PL
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Viessmann.pl can be misinterpreted by Google and other search engines. Our service has detected that Polish 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 Viessmann.pl 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.
viessmann.pl
Open Graph description is not detected on the main page of Viessmann. 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: