18.8 sec in total
1.5 sec
16.7 sec
638 ms
Click here to check amazing Reef content for Czech Republic. Otherwise, check out these important facts you probably never knew about reef.sk
Visit reef.skWe analyzed Reef.sk page load time and found that the first response time was 1.5 sec and then it took 17.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.
reef.sk performance score
name
value
score
weighting
Value3.8 s
27/100
10%
Value4.7 s
33/100
25%
Value5.4 s
56/100
10%
Value30 ms
100/100
30%
Value0.13
81/100
15%
Value5.4 s
72/100
10%
1481 ms
2579 ms
393 ms
369 ms
373 ms
Our browser made a total of 52 requests to load all elements on the main page. We found that 98% of them (51 requests) were addressed to the original Reef.sk, 2% (1 request) were made to Reefmarket.cz. The less responsive or slowest element that took the longest time to load (15.2 sec) relates to the external source Reefmarket.cz.
Page size can be reduced by 356.0 kB (62%)
571.2 kB
215.2 kB
In fact, the total size of Reef.sk main page is 571.2 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. 15% of websites need less resources to load. Javascripts take 174.7 kB which makes up the majority of the site volume.
Potential reduce by 121.1 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 25.5 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 121.1 kB or 90% of the original size.
Potential reduce by 16.6 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, Reef needs image optimization as it can save up to 16.6 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 127.3 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 127.3 kB or 73% of the original size.
Potential reduce by 91.1 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. Reef.sk needs all CSS files to be minified and compressed as it can save up to 91.1 kB or 82% of the original size.
Number of requests can be reduced by 28 (56%)
50
22
The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Reef. 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 from 12 to 1 for CSS and as a result speed up the page load time.
reef.sk
1481 ms
stylesheet.css
2579 ms
stylesheet.css
393 ms
posledne_prispevky.gif
369 ms
bullet.gif
373 ms
spacer.gif
382 ms
najdiskutovanejsie_temy.gif
403 ms
reefmarketbanner.gif
15186 ms
jquery.min.js
1322 ms
core.js
2839 ms
forum_fn.js
922 ms
ajax.js
840 ms
reklama.jpg
1309 ms
morskysvet_banner.gif
2785 ms
reefban.jpg
1574 ms
aquavala.jpg
1705 ms
aqua_trend.gif
11163 ms
koralovyutes.png
1947 ms
design-meduzy.jpg
3477 ms
aquasymbioza.jpg
2482 ms
banner_HD1.png
2487 ms
smejkal.jpg
2893 ms
seareef.gif
3216 ms
baner-reef-sk.gif
3146 ms
reklama-koniec.jpg
3201 ms
common.css
1450 ms
links.css
1554 ms
content.css
1608 ms
buttons.css
1617 ms
cp.css
1816 ms
forms.css
1911 ms
colours.css
2093 ms
imageset.css
1968 ms
bg_header.gif
226 ms
site_logo.gif
367 ms
icons_button.png
419 ms
icon_faq.gif
419 ms
icon_logout.gif
423 ms
icon_register.gif
582 ms
icon_home.gif
714 ms
bg_list.gif
780 ms
gradient.gif
779 ms
forum_read.gif
782 ms
icon_topic_latest.gif
951 ms
bg_button.gif
1081 ms
icon_delete_cookies.gif
1139 ms
icon_team.gif
1154 ms
icon_pm.gif
1319 ms
loading.gif
1431 ms
icon_search.gif
1422 ms
print.css
186 ms
responsive.css
356 ms
reef.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
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[role]s are not contained by their required parent element
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
Some elements have a [tabindex] value greater than 0
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
reef.sk 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
General
Impact
Issue
Detected JavaScript libraries
reef.sk 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
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 doesn't use legible font sizes
Tap targets are not sized appropriately
SK
SK
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Reef.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 Reef.sk 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.
reef.sk
Open Graph description is not detected on the main page of Reef. 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: