2.6 sec in total
402 ms
2 sec
142 ms
Click here to check amazing Zcenter content. Otherwise, check out these important facts you probably never knew about zcenter.pl
ZCenter s.c. to firma oferująca serwery dedykowane w polsce, kolokację, hosting współdzielony oraz outsorucing IT
Visit zcenter.plWe analyzed Zcenter.pl page load time and found that the first response time was 402 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
zcenter.pl performance score
name
value
score
weighting
Value1.9 s
87/100
10%
Value6.1 s
12/100
25%
Value2.7 s
96/100
10%
Value60 ms
100/100
30%
Value0.008
100/100
15%
Value2.0 s
99/100
10%
402 ms
130 ms
256 ms
406 ms
274 ms
Our browser made a total of 30 requests to load all elements on the main page. We found that all of those requests were addressed to Zcenter.pl and no external sources were called. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Zcenter.pl.
Page size can be reduced by 108.9 kB (16%)
694.6 kB
585.7 kB
In fact, the total size of Zcenter.pl main page is 694.6 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. 20% of websites need less resources to load. Images take 546.2 kB which makes up the majority of the site volume.
Potential reduce by 8.8 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 1.8 kB, which is 15% 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 8.8 kB or 74% of the original size.
Potential reduce by 8.1 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. Zcenter images are well optimized though.
Potential reduce by 80.2 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 80.2 kB or 66% of the original size.
Potential reduce by 11.7 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. Zcenter.pl needs all CSS files to be minified and compressed as it can save up to 11.7 kB or 79% of the original size.
Number of requests can be reduced by 16 (55%)
29
13
The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zcenter. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.
zcenter.pl
402 ms
style.css
130 ms
nivo-slider.css
256 ms
jquery-1.4.2.min.js
406 ms
cufon-yui.js
274 ms
dropdown.js
280 ms
jquery.cycle.all.min.js
281 ms
jquery.nivo.slider.pack.js
281 ms
bg-wrapper.gif
165 ms
logo.png
163 ms
bg-navtop.png
157 ms
bg-navlink.gif
172 ms
bg-main.png
169 ms
slider-bottom.gif
171 ms
slider-frame.gif
306 ms
we_1.jpg
967 ms
we_2.jpg
836 ms
we_3.jpg
840 ms
we_4.jpg
830 ms
guarantees.gif
320 ms
list.png
432 ms
folder.png
449 ms
btn_pl_zamow.png
571 ms
bok.gif
577 ms
tel-kontakt.png
711 ms
fax_icon.gif
713 ms
email_icon.jpg
840 ms
ms_p.png
1015 ms
bg-nav-slider.gif
129 ms
nav-slide.png
131 ms
zcenter.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.
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
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
Image elements do not have [alt] attributes
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
zcenter.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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
zcenter.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
PL
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zcenter.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 Zcenter.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.
zcenter.pl
Open Graph description is not detected on the main page of Zcenter. 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: