2.9 sec in total
456 ms
2.3 sec
136 ms
Click here to check amazing JF content. Otherwise, check out these important facts you probably never knew about jf.sk
Poradenstvo, školenia z bezpečnosti a ochrany zdravia pri práci, ochrana pred požiarmi.
Visit jf.skWe analyzed Jf.sk page load time and found that the first response time was 456 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
jf.sk performance score
name
value
score
weighting
Value5.7 s
5/100
10%
Value10.2 s
0/100
25%
Value15.9 s
0/100
10%
Value430 ms
64/100
30%
Value0.027
100/100
15%
Value23.9 s
1/100
10%
456 ms
635 ms
474 ms
354 ms
373 ms
Our browser made a total of 16 requests to load all elements on the main page. We found that 88% of them (14 requests) were addressed to the original Jf.sk, 13% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (758 ms) belongs to the original domain Jf.sk.
Page size can be reduced by 122.7 kB (48%)
253.7 kB
131.0 kB
In fact, the total size of Jf.sk main page is 253.7 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 87.9 kB which makes up the majority of the site volume.
Potential reduce by 22.8 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. 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 22.8 kB or 77% of the original size.
Potential reduce by 1.9 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. JF images are well optimized though.
Potential reduce by 28.1 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 28.1 kB or 53% of the original size.
Potential reduce by 69.9 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. Jf.sk needs all CSS files to be minified and compressed as it can save up to 69.9 kB or 84% of the original size.
Number of requests can be reduced by 3 (21%)
14
11
The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JF. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.
jf.sk
456 ms
www.jf.sk
635 ms
_style.css
474 ms
_default_absolut.css
354 ms
new_js.php
373 ms
main.js
356 ms
vodorovne_menu.js
138 ms
ga.js
10 ms
bcgr-exp.gif
122 ms
hlavicka_01.jpg
359 ms
print.gif
120 ms
i_3661417.jpg
122 ms
i_3661416.png
236 ms
empty.gif
758 ms
__utm.gif
11 ms
_print.css
122 ms
jf.sk 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-hidden="true"] elements contain focusable descendents
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
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
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>).
jf.sk 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
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
jf.sk SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
SK
SK
WINDOWS-1250
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jf.sk can be misinterpreted by Google and other search engines. Our service has detected that Slovak is used on the page, and it matches the claimed language. Our system also found out that Jf.sk main page’s claimed encoding is windows-1250. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
jf.sk
Open Graph description is not detected on the main page of JF. 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: