2.2 sec in total
299 ms
1.7 sec
150 ms
Visit clubcard.cz now to see the best up-to-date Clubcard content for Czech Republic and also check out these interesting facts you probably never knew about clubcard.cz
Homepage
Visit clubcard.czWe analyzed Clubcard.cz page load time and found that the first response time was 299 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
clubcard.cz performance score
name
value
score
weighting
Value5.1 s
9/100
10%
Value6.0 s
13/100
25%
Value6.8 s
35/100
10%
Value1,460 ms
15/100
30%
Value0.17
70/100
15%
Value9.0 s
34/100
10%
299 ms
350 ms
85 ms
172 ms
441 ms
Our browser made a total of 35 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Clubcard.cz, 71% (25 requests) were made to Itesco.cz and 14% (5 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (605 ms) relates to the external source Itesco.cz.
Page size can be reduced by 118.7 kB (26%)
453.3 kB
334.6 kB
In fact, the total size of Clubcard.cz main page is 453.3 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. 60% of websites need less resources to load. Javascripts take 222.2 kB which makes up the majority of the site volume.
Potential reduce by 116.6 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 48.1 kB, which is 36% 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 116.6 kB or 87% of the original size.
Potential reduce by 167 B
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. Clubcard images are well optimized though.
Potential reduce by 554 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 1.4 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. Clubcard.cz has all CSS files already compressed.
Number of requests can be reduced by 13 (52%)
25
12
The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Clubcard. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
clubcard.cz
299 ms
350 ms
gtm.js
85 ms
gtm.js
172 ms
75781.css
441 ms
75781.css
512 ms
1a9100150779a28d9b30e893ed4c622d.css
214 ms
polyfill.min.js
171 ms
iframe_api
49 ms
cdee65589822aa8e287291c1f2f1b07e.js
605 ms
5fe967
53 ms
loading_spinner.css
356 ms
loading_spinner.js
373 ms
landing
134 ms
js
88 ms
js
126 ms
www-widgetapi.js
3 ms
Logo-lockup--1-.png
132 ms
HP_banner_1236x330_CC.jpg
136 ms
HP_banner_1236x330_CC.jpg
134 ms
618_x_379_cc_telefon.jpg
133 ms
cc-benefits-detail-3_1.jpg
134 ms
607x270_cc_ruka.jpg
133 ms
qq_2.jpg
135 ms
Bitmap.png
134 ms
Bitmap_1_.png
136 ms
js
63 ms
TESCOModern-Italic-web.woff
132 ms
TESCOModern-MediumItalic-web.woff
132 ms
TESCOModern-LightItalic-web.woff
131 ms
TESCOModern-BoldItalic-web.woff
132 ms
TESCOModern-Regular-web.woff
130 ms
TESCOModern-Medium-web.woff
183 ms
TESCOModern-Light-web.woff
266 ms
TESCOModern-Bold-web.woff
197 ms
clubcard.cz 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
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.
clubcard.cz 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
Missing source maps for large first-party JavaScript
clubcard.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Clubcard.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Clubcard.cz 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.
clubcard.cz
Open Graph data is detected on the main page of Clubcard. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: