6.4 sec in total
341 ms
3 sec
3 sec
Welcome to kostrzewa.com.pl homepage info - get ready to check KOSTRZEWA Com best content right away, or after learning these important things about kostrzewa.com.pl
Obniż Koszty Ogrzewania - Polski Producent Kotłów Elektrycznych, Wysokotemperaturowych Pomp Ciepła (Propan), Kotłów na Pellet i Drewno. Bezpłatne Doradztwo Energetyczne. Wymień Stary Piec w Programie ...
Visit kostrzewa.com.plWe analyzed Kostrzewa.com.pl page load time and found that the first response time was 341 ms and then it took 6.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
kostrzewa.com.pl performance score
name
value
score
weighting
Value4.8 s
11/100
10%
Value10.8 s
0/100
25%
Value7.4 s
27/100
10%
Value610 ms
48/100
30%
Value0.056
98/100
15%
Value6.8 s
55/100
10%
341 ms
642 ms
61 ms
147 ms
422 ms
Our browser made a total of 56 requests to load all elements on the main page. We found that 80% of them (45 requests) were addressed to the original Kostrzewa.com.pl, 5% (3 requests) were made to Googletagmanager.com and 5% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Kostrzewa.com.pl.
Page size can be reduced by 47.6 kB (2%)
2.0 MB
2.0 MB
In fact, the total size of Kostrzewa.com.pl main page is 2.0 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. 45% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.
Potential reduce by 34.1 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. This page needs HTML code to be minified as it can gain 4.5 kB, 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 34.1 kB or 80% of the original size.
Potential reduce by 13.0 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. KOSTRZEWA Com images are well optimized though.
Potential reduce by 69 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 422 B
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. Kostrzewa.com.pl has all CSS files already compressed.
Number of requests can be reduced by 26 (53%)
49
23
The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of KOSTRZEWA Com. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
kostrzewa.com.pl
341 ms
www.kostrzewa.com.pl
642 ms
css
61 ms
lity.css
147 ms
bulma-0.9.0.min.css
422 ms
slick.css
381 ms
slick-theme.css
394 ms
kostrzewa.css
416 ms
jquery-3.3.1.min.js
557 ms
modernizr-custom.js
447 ms
slick.min.js
506 ms
lity.min.js
525 ms
kostrzewa.js
551 ms
jquery.lazy.min.js
581 ms
js
93 ms
gtm.js
187 ms
PL.png
147 ms
EN.png
147 ms
DE.png
145 ms
FR.png
147 ms
LT.png
144 ms
youtube.png
146 ms
twitter.png
288 ms
facebook.png
292 ms
mobile-phone.png
293 ms
globe.png
293 ms
clock.png
293 ms
trolley-empty.png
290 ms
kostrzewa-logo-pl.png
377 ms
2022_03_15_home_slider_wiosna_gotowy.jpg
1036 ms
ue-pl.png
404 ms
40lat_produkujemy_w_polsce.jpg
952 ms
a5w17c4m.jpg
687 ms
xsb5la0b.jpg
824 ms
mnc111r5.jpg
622 ms
6hk6mnbv.jpg
675 ms
o0lismsn.jpg
1123 ms
vakoak5d.jpg
1084 ms
2a1ff5sd.jpg
1235 ms
9rgs7qv0.jpg
1098 ms
43iu2a8j.jpg
1087 ms
v1rnj0pt.jpg
1162 ms
kostrzewa-logo-footer-pl.png
1225 ms
contact.png
1224 ms
envelope.png
1237 ms
download.png
1252 ms
js
55 ms
analytics.js
48 ms
JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aXw.woff
120 ms
JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w5aXw.woff
125 ms
JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w5aXw.woff
126 ms
Helvetica-Narrow-Bold.woff
1137 ms
Helvetica-Narrow.woff
1210 ms
collect
77 ms
collect
66 ms
ga-audiences
40 ms
kostrzewa.com.pl accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
Links do not have a discernible name
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.
kostrzewa.com.pl best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
kostrzewa.com.pl SEO score
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 doesn't use legible font sizes
Tap targets are not sized appropriately
PL
PL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kostrzewa.com.pl can be misinterpreted by Google and other search engines. Our service has detected that Polish is used on the page, and it matches the claimed language. Our system also found out that Kostrzewa.com.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.
kostrzewa.com.pl
Open Graph description is not detected on the main page of KOSTRZEWA Com. 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: