7.1 sec in total
442 ms
6.2 sec
407 ms
Welcome to ucebnice.com homepage info - get ready to check Ucebnice best content for Czech Republic right away, or after learning these important things about ucebnice.com
Nejširší nabídka učebnic pro základní a střední školy. Nakladatelství: Alexander, ARCH, Chamb, DYS, Flössler, Kupka, NČGS, Septima, SPN...
Visit ucebnice.comWe analyzed Ucebnice.com page load time and found that the first response time was 442 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
ucebnice.com performance score
name
value
score
weighting
Value6.8 s
1/100
10%
Value9.6 s
0/100
25%
Value15.0 s
1/100
10%
Value10,950 ms
0/100
30%
Value0
100/100
15%
Value22.8 s
1/100
10%
442 ms
2217 ms
157 ms
308 ms
461 ms
Our browser made a total of 83 requests to load all elements on the main page. We found that 94% of them (78 requests) were addressed to the original Ucebnice.com, 4% (3 requests) were made to Google-analytics.com and 2% (2 requests) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Ucebnice.com.
Page size can be reduced by 188.1 kB (31%)
616.4 kB
428.3 kB
In fact, the total size of Ucebnice.com main page is 616.4 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. 30% of websites need less resources to load. Images take 375.0 kB which makes up the majority of the site volume.
Potential reduce by 38.3 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 38.3 kB or 81% of the original size.
Potential reduce by 11.6 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. Ucebnice images are well optimized though.
Potential reduce by 92.0 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 92.0 kB or 68% of the original size.
Potential reduce by 46.2 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. Ucebnice.com needs all CSS files to be minified and compressed as it can save up to 46.2 kB or 79% of the original size.
Number of requests can be reduced by 53 (65%)
81
28
The browser has sent 81 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ucebnice. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.
ucebnice.com
442 ms
www.ucebnice.com
2217 ms
layout_n.css
157 ms
print.css
308 ms
common.js
461 ms
formcheck.js
306 ms
jquery.min.js
24 ms
jquery-ui.min.js
26 ms
jquery.cookie.js
318 ms
jquery.json.min.js
321 ms
jquery.backgroundpos.min.js
453 ms
jquery.blend.my.js
466 ms
jquery.scrollTo-1.4.2-min.js
470 ms
pluginTool.js
472 ms
custom-form-elements.js
602 ms
jquery.infieldlabel.min.js
604 ms
jquery.fancybox-1.3.4.css
621 ms
jquery.fancybox-1.3.4.pack.js
617 ms
jquery.easing-1.3.pack.js
618 ms
jquery.mousewheel-3.0.4.pack.js
750 ms
init.js
754 ms
imgGallery.js
775 ms
popupMessage.js
763 ms
layout-all.css
636 ms
elements.css
762 ms
userdetail.css
766 ms
shop-order.css
771 ms
shop-orders.css
782 ms
forum.css
794 ms
imglist.css
922 ms
shop.css
926 ms
shop-basket.css
929 ms
base.css
944 ms
tiny.css
947 ms
popupMessage.css
1081 ms
header.bg.png
160 ms
header.img.ZS.jpg
843 ms
footer.bg.s.png
153 ms
footer.bg.m.png
162 ms
header.login.ico.png
159 ms
footer.contact.input.bg.png
159 ms
footer.contact.submit.bg.jpg
299 ms
slideshow.left.png
529 ms
slideshow.right.png
523 ms
logo.png
436 ms
header.search.input.bg.png
287 ms
header.search.submit.ico.png
423 ms
header.cart.ico.png
435 ms
header.categories.bg.m.png
573 ms
header.categories.bg.l.png
585 ms
header.categories.bg.r.png
585 ms
header.categories.delim.png
662 ms
home.boxes.hdr.bg.png
685 ms
categories.books.png
738 ms
home.categories.item.arr.png
763 ms
categories.globe.png
766 ms
home.categories.more.png
817 ms
knihkupectvi_cat2.png
867 ms
categories.book.universum.png
975 ms
Zdreviny.jpg
986 ms
home.actionProducts.link.arr.png
974 ms
Samolepky%20do%20dom%C3%A1cnosti%20dekora%C4%8Dn%C3%AD%20sovy.jpg
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products.item.buttons.buy.png
984 ms
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Rodi%C4%8D%C5%AFm%20na%20nejhez%C4%8D%C3%AD%20cestu.png
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ga.js
5 ms
__utm.gif
13 ms
__utm.gif
4 ms
3176387eef41c465fc3b5383104895c0.jpg
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9788072244102.jpg
1218 ms
bb_000356.jpg
1350 ms
leftMenu.header.bg.jpg
1348 ms
leftMenu.item.arw.gif
1361 ms
banner_doprava_s.jpg
1222 ms
header.img.SS.jpg
1943 ms
footer.categories.item.arr.png
1214 ms
footer.logo.png
1203 ms
ucebnice.com 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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible 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.
ucebnice.com 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
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
ucebnice.com 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
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ucebnice.com 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 Ucebnice.com 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.
ucebnice.com
Open Graph description is not detected on the main page of Ucebnice. 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: