3.3 sec in total
171 ms
2.4 sec
716 ms
Welcome to rockster.cz homepage info - get ready to check Rockster best content for Czech Republic right away, or after learning these important things about rockster.cz
Obchod hudebnimi nastroji se zaměřením na kytary, basové kytary, struny, efekty, kytarové příslušenství, pro audio, MIDI, zvukové převodníky, mikrofony, sluchátka. Limitované série kytar. Zdarma doruč...
Visit rockster.czWe analyzed Rockster.cz page load time and found that the first response time was 171 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
rockster.cz performance score
name
value
score
weighting
Value4.0 s
24/100
10%
Value6.7 s
7/100
25%
Value9.9 s
10/100
10%
Value15,860 ms
0/100
30%
Value0.019
100/100
15%
Value21.7 s
1/100
10%
171 ms
474 ms
871 ms
179 ms
392 ms
Our browser made a total of 89 requests to load all elements on the main page. We found that 31% of them (28 requests) were addressed to the original Rockster.cz, 64% (57 requests) were made to E18.ecdn.cz and 1% (1 request) were made to Stats.simplia.cz. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source E18.ecdn.cz.
Page size can be reduced by 26.0 kB (2%)
1.1 MB
1.1 MB
In fact, the total size of Rockster.cz 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. 60% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 21.4 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 21.4 kB or 74% of the original size.
Potential reduce by 2.4 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. Rockster images are well optimized though.
Potential reduce by 2.2 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 2.2 kB or 51% of the original size.
Number of requests can be reduced by 23 (27%)
86
63
The browser has sent 86 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rockster. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.
rockster.cz
171 ms
www.rockster.cz
474 ms
analytics.js
871 ms
package_cz.min.js
179 ms
_pt.min.js
392 ms
piwik.js
611 ms
visa.gif
181 ms
mastercard.gif
176 ms
dolar.gif
177 ms
discover.gif
179 ms
paypal.gif
308 ms
doprava.jpg
305 ms
kyser.gif
308 ms
maxon.gif
309 ms
sterling.jpg
303 ms
untitled-1-652.jpg
308 ms
868-sbmm-12-2015.jpg
318 ms
867-jp100d.jpg
318 ms
cetelem.jpg
316 ms
840-musicnomad.jpg
316 ms
heritage-u.gif
318 ms
869-double2.jpg
319 ms
87030.jpg
318 ms
86925.jpg
640 ms
carvin_07-788-802.jpg
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spectraflex-790.jpg
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866-1.jpg
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865-2.jpg
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864-3.jpg
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863-4.jpg
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861-6.jpg
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fb-rockster-ico.png
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gp-rockster-ico.png
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eb-aluminium-bronz-struny-829.jpg
333 ms
kirk-hammett-830.jpg
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voo-doo-lab.jpg
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back_top_repeat.png
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back_bottom_repeat.png
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back_top.png
329 ms
back_bottom.png
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lista.jpg
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slog.jpg
309 ms
hlava2.png
308 ms
hledat.gif
308 ms
aub.gif
429 ms
head2.jpg
475 ms
menu.jpg
410 ms
menuli.jpg
411 ms
hov.jpg
412 ms
sip.jpg
967 ms
back_login.png
520 ms
bg2.jpg
628 ms
kategorie.gif
518 ms
odr.gif
521 ms
homepage_uvod_back.png
979 ms
kosikh2.jpg
626 ms
back_kosik.png
630 ms
button_objednat.png
716 ms
armada.png
763 ms
social.png
740 ms
zpravy.png
734 ms
package.min.css
170 ms
85333.jpg
421 ms
pixel.gif
386 ms
r-zastupuje.png
13 ms
button_detail.png
11 ms
akce.png
13 ms
footer.jpg
14 ms
back_top.png
1398 ms
back_bottom.png
9 ms
slog.jpg
10 ms
hlava2.png
11 ms
aub.gif
14 ms
head2.jpg
14 ms
back_login.png
15 ms
kategorie.gif
16 ms
homepage_uvod_back.png
17 ms
kosikh2.jpg
26 ms
back_kosik.png
24 ms
armada.png
26 ms
social.png
167 ms
ec.js
264 ms
linkid.js
276 ms
collect
5 ms
collect
55 ms
ga-audiences
34 ms
rockster.cz 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
[aria-hidden="true"] elements contain focusable descendents
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[aria-*] attributes do not have valid values
ARIA IDs are not unique
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
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>).
rockster.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
rockster.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 doesn't use legible font sizes
Tap targets are not sized appropriately
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rockster.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 Rockster.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.
rockster.cz
Open Graph data is detected on the main page of Rockster. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: