6.8 sec in total
379 ms
4.6 sec
1.8 sec
Click here to check amazing Cenum content for Poland. Otherwise, check out these important facts you probably never knew about cenum.pl
Centrum numizmatyczne - serwis pozwalający zarządzać kolekcją numizmatów, posiada katalog monet wraz z aktualnymi informacjami na temat aukcyjnych cen monet
Visit cenum.plWe analyzed Cenum.pl page load time and found that the first response time was 379 ms and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
cenum.pl performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value11.9 s
0/100
25%
Value6.9 s
33/100
10%
Value1,170 ms
21/100
30%
Value0
100/100
15%
Value11.5 s
18/100
10%
379 ms
219 ms
213 ms
79 ms
432 ms
Our browser made a total of 157 requests to load all elements on the main page. We found that 78% of them (123 requests) were addressed to the original Cenum.pl, 5% (8 requests) were made to Pagead2.googlesyndication.com and 4% (6 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Cenum.pl.
Page size can be reduced by 147.2 kB (14%)
1.1 MB
924.7 kB
In fact, the total size of Cenum.pl main page is 1.1 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. 65% of websites need less resources to load. Images take 630.2 kB which makes up the majority of the site volume.
Potential reduce by 56.3 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 56.3 kB or 81% of the original size.
Potential reduce by 12.0 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. Cenum images are well optimized though.
Potential reduce by 72.7 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 72.7 kB or 21% of the original size.
Potential reduce by 6.2 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. Cenum.pl needs all CSS files to be minified and compressed as it can save up to 6.2 kB or 19% of the original size.
Number of requests can be reduced by 50 (32%)
155
105
The browser has sent 155 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cenum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.
cenum.pl
379 ms
style.css
219 ms
jquery.ui.all.css
213 ms
jquery.min.js
79 ms
jquery-ui.min.js
432 ms
jquery.lazyload.mini.js
250 ms
jquery.toastmessage.js
250 ms
jquery.fancybox-1.3.4.pack.js
247 ms
jquery.filedrop.js
312 ms
jquery.flot.js
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jquery.flot.symbol.js
330 ms
jquery.Jcrop.min.js
326 ms
page.js
333 ms
adsbygoogle.js
80 ms
jquery.ui.base.css
213 ms
jquery.ui.theme.css
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jquery.ui.core.css
116 ms
jquery.ui.resizable.css
110 ms
jquery.ui.selectable.css
115 ms
jquery.ui.accordion.css
124 ms
jquery.ui.autocomplete.css
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jquery.ui.button.css
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jquery.ui.dialog.css
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jquery.ui.slider.css
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jquery.ui.tabs.css
225 ms
jquery.ui.datepicker.css
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jquery.ui.progressbar.css
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logo.png
202 ms
mw_menu_separator.png
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zrt_lookup.html
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splash.jpg
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index_katalog.png
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show_ads_impl.js
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analytics.js
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all.js
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all.js
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cookie.js
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integrator.js
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ads
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ads
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231 ms
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gen_204
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ad
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window_focus.js
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qs_click_protection.js
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rx_lidar.js
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abg_lite.js
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omrhp.js
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f36U5LLOSFCl_RQcRb4gz5dtt8ZR3FgOTI7LNXASQxk.js
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pixel
75 ms
bounce
75 ms
cat_104.png
634 ms
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656 ms
facebook.png
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footbg.jpg
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rum
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activeview
109 ms
sodar
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cenum.pl accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
cenum.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
Page has valid source maps
cenum.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
PL
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cenum.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 Cenum.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.
cenum.pl
Open Graph description is not detected on the main page of Cenum. 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: