10.9 sec in total
364 ms
9.8 sec
678 ms
Visit delfin.cz now to see the best up-to-date Delfin content and also check out these interesting facts you probably never knew about delfin.cz
Sportcentrum Delfín nabízí sportovní vyžití mnoha směrů. Fitness, squash a sálové cvičení a širokou nabídku relaxace v podobě masáží a fyzioterapie.
Visit delfin.czWe analyzed Delfin.cz page load time and found that the first response time was 364 ms and then it took 10.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
delfin.cz performance score
name
value
score
weighting
Value7.6 s
1/100
10%
Value7.6 s
4/100
25%
Value16.6 s
0/100
10%
Value370 ms
70/100
30%
Value0.22
57/100
15%
Value22.7 s
1/100
10%
364 ms
903 ms
237 ms
474 ms
587 ms
Our browser made a total of 118 requests to load all elements on the main page. We found that 86% of them (101 requests) were addressed to the original Delfin.cz, 3% (3 requests) were made to Stats.g.doubleclick.net and 3% (3 requests) were made to Vs17.tawk.to. The less responsive or slowest element that took the longest time to load (4 sec) belongs to the original domain Delfin.cz.
Page size can be reduced by 1.4 MB (39%)
3.6 MB
2.2 MB
In fact, the total size of Delfin.cz main page is 3.6 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 2.4 MB which makes up the majority of the site volume.
Potential reduce by 120.0 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 25.0 kB, which is 19% 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 120.0 kB or 90% of the original size.
Potential reduce by 499.1 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. Obviously, Delfin needs image optimization as it can save up to 499.1 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 644.0 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 644.0 kB or 71% of the original size.
Potential reduce by 165.5 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. Delfin.cz needs all CSS files to be minified and compressed as it can save up to 165.5 kB or 85% of the original size.
Number of requests can be reduced by 27 (24%)
113
86
The browser has sent 113 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Delfin. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
delfin.cz
364 ms
www.delfin.cz
903 ms
prettyPhoto.css
237 ms
style.css
474 ms
jquery.min.js
587 ms
jquery.user_notify.js
235 ms
user_notify.css
237 ms
javascript.php
462 ms
jquery.tipsy.js
467 ms
selectivizr-min.js
468 ms
jquery.min.js
31 ms
jquery.bxslider.min.js
469 ms
jquery.bxslider.css
688 ms
myjquery.js
697 ms
jquery.backstretch.min.js
6 ms
modernizr-2.6.2.min.js
810 ms
css_browser_selector.js
703 ms
jquery.prettyPhoto.js
831 ms
jquery-ui.min.css
830 ms
jquery-ui-1.10.4.min.js
1411 ms
jquery.fancybox-1.3.4.pack.js
1044 ms
menuresp.js
938 ms
jquery.fancybox-1.3.4.css
1041 ms
analytics.js
1051 ms
distilled.FirstTouch.js
1057 ms
opensans-regular-webfont.woff
847 ms
gtm.js
135 ms
dc.js
44 ms
dot.asp
312 ms
phpThumb.php
1102 ms
logo.png
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menu.png
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welcome_bg2.jpg
1010 ms
btn-arrow.png
481 ms
welcome_bg4.jpg
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welcome_slide3.jpg
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thumbsup.png
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anchor-arrow.png
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fb_2.png
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program.png
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hp_difficulty_2.png
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table-arrow.png
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full2.png
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default
568 ms
__utm.gif
38 ms
analytics.js
33 ms
collect
12 ms
collect
59 ms
pocet.html
3032 ms
opensans-light-webfont.woff
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opensans-bold-webfont.woff
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icons.png
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ajax-loader-3.gif
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opensans-extrabold.woff
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myriad-web-pro.ttf
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map2.jpg
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footer-ok.png
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footer-fb.png
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inizio.png
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bx_loader.gif
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slider-arrow-l.png
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slider-arrow-r.png
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printstyle.css
246 ms
delfin.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
Buttons do not have an accessible 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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
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>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
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.
delfin.cz 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
Browser errors were logged to the console
Page has valid source maps
delfin.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
Tap targets are not sized appropriately
CS
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Delfin.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech 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 Delfin.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.
delfin.cz
Open Graph data is detected on the main page of Delfin. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: