10.6 sec in total
585 ms
9.6 sec
398 ms
Visit glass4u.cz now to see the best up-to-date Glass4u content for Czech Republic and also check out these interesting facts you probably never knew about glass4u.cz
Korálkový obchod.
Visit glass4u.czWe analyzed Glass4u.cz page load time and found that the first response time was 585 ms and then it took 10 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
glass4u.cz performance score
name
value
score
weighting
Value4.4 s
17/100
10%
Value26.6 s
0/100
25%
Value8.8 s
15/100
10%
Value330 ms
76/100
30%
Value0.123
84/100
15%
Value11.7 s
17/100
10%
585 ms
1265 ms
258 ms
868 ms
626 ms
Our browser made a total of 169 requests to load all elements on the main page. We found that 85% of them (143 requests) were addressed to the original Glass4u.cz, 2% (3 requests) were made to Assets.pinterest.com and 2% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Glass4u.cz.
Page size can be reduced by 1.1 MB (40%)
2.9 MB
1.7 MB
In fact, the total size of Glass4u.cz main page is 2.9 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. 55% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.
Potential reduce by 159.4 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 159.4 kB or 83% of the original size.
Potential reduce by 122.9 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. Glass4u images are well optimized though.
Potential reduce by 530.7 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 530.7 kB or 68% of the original size.
Potential reduce by 322.5 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. Glass4u.cz needs all CSS files to be minified and compressed as it can save up to 322.5 kB or 84% of the original size.
Number of requests can be reduced by 48 (29%)
164
116
The browser has sent 164 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Glass4u. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
glass4u.cz
585 ms
1265 ms
common.css
258 ms
styles.css
868 ms
jquery-ui-1.8.20.custom.css
626 ms
slimbox2.css
282 ms
jquery.jqzoom.css
292 ms
jquery.jrating.css
358 ms
jcarousel-es-gallery.css
372 ms
jcarousel-es-title-products.css
418 ms
styles-en.css
431 ms
jquery-1.7.2.min.js
891 ms
jquery-ui-1.8.20.custom.min.js
1315 ms
jquery.form.js
782 ms
filters.js
557 ms
jquery.autocomplete.js
797 ms
whisperer.js
747 ms
jquery.ba-hashchange.min.js
877 ms
imgpreview.full.0.22.jquery.js
908 ms
jquery.jqzoom-core.js
1049 ms
jquery.changebox.js
978 ms
jquery.jcarousel.min.js
1005 ms
slimbox2.js
1009 ms
priznaky.js
1021 ms
jquery.jrating.js
1097 ms
cartwindow.js
1141 ms
alignheights.js
1131 ms
jquery.selectBox.min.js
1258 ms
pinit.js
6 ms
conversion.js
17 ms
analytics.js
21 ms
gjs.php
256 ms
body.png
166 ms
all.js
182 ms
wkJCXjM2PNg
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pinit_fg_en_round_red_16.png
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bg.jpg
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logo.png
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mutation.png
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flag-cs.png
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flag-de.png
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sysbar.png
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separ.png
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cart.png
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li.png
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search.png
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content-top.png
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content-bottom.png
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label-menu.png
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label.png
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box.png
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store.jpg
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dark-block.png
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komponenty%20kat.JPG
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pinit_main.js
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spike%20kat.JPG
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tile.JPG
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www-embed-player-vflfNyN_r.css
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www-embed-player.js
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base.js
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xd_arbiter.php
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xd_arbiter.php
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widget.php
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fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js
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ad_status.js
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dvou.JPG
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MT.JPG
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2UX7WLTfW3W8TclTUvlFyQ.woff
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pohankalogo.jpg
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gopay.png
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mastercardsecure.png
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visaelectron.png
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mastercard.png
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mastercardelectron.png
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maestro.png
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footer-boxes.png
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footer-boxes2.png
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news.png
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youtube.png
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foot.jpg
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select.png
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trailers.png
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close.png
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loading.gif
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vert.png
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item.png
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buy.png
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2235 ms
www.glass4u.cz
1397 ms
print.css
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left-zalozka-only.png
317 ms
glass4u.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 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.
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
Image elements do not have [alt] attributes
Links do not have a discernible name
glass4u.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
glass4u.cz SEO score
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 uses legible font sizes
Tap targets are not sized appropriately
CS
EN
WINDOWS-1250
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Glass4u.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it does not match the claimed English language. Our system also found out that Glass4u.cz 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.
glass4u.cz
Open Graph description is not detected on the main page of Glass4u. 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: