4.1 sec in total
692 ms
2.6 sec
805 ms
Welcome to vosasos.cz homepage info - get ready to check Vosasos best content for Czech Republic right away, or after learning these important things about vosasos.cz
Státní Vyšší odborná škola a Střední odborná škola v Roudnici nad Labem.
Visit vosasos.czWe analyzed Vosasos.cz page load time and found that the first response time was 692 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
vosasos.cz performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value6.7 s
7/100
25%
Value7.0 s
33/100
10%
Value590 ms
50/100
30%
Value0.759
6/100
15%
Value9.0 s
34/100
10%
692 ms
120 ms
238 ms
363 ms
239 ms
Our browser made a total of 56 requests to load all elements on the main page. We found that 71% of them (40 requests) were addressed to the original Vosasos.cz, 18% (10 requests) were made to Static.xx.fbcdn.net and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Vosasos.cz.
Page size can be reduced by 485.5 kB (51%)
956.5 kB
471.0 kB
In fact, the total size of Vosasos.cz main page is 956.5 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. 45% of websites need less resources to load. Javascripts take 453.0 kB which makes up the majority of the site volume.
Potential reduce by 37.3 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 37.3 kB or 80% of the original size.
Potential reduce by 93.0 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, Vosasos needs image optimization as it can save up to 93.0 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 305.0 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 305.0 kB or 67% of the original size.
Potential reduce by 50.2 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. Vosasos.cz needs all CSS files to be minified and compressed as it can save up to 50.2 kB or 85% of the original size.
Number of requests can be reduced by 34 (63%)
54
20
The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vosasos. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
vosasos.cz
692 ms
attachments_hide.css
120 ms
attachments_list.css
238 ms
mootools-core.js
363 ms
core.js
239 ms
caption.js
242 ms
mootools-more.js
605 ms
attachments_refresh.js
245 ms
system.css
352 ms
general.css
354 ms
template.css
378 ms
jquery.js
489 ms
script.js
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system.css
119 ms
ga.js
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ct24.gif
377 ms
Bottom_texture.jpg
119 ms
Middle_texture.jpg
240 ms
page_gl.png
964 ms
nav.png
120 ms
menuitem.png
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FF.png
120 ms
moodle1.gif
239 ms
icon-sitemap.gif
242 ms
header-object.png
1074 ms
sheet_s.png
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sheet_h.png
357 ms
sheet_v.png
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sidebar_bg.png
360 ms
sidebar_g.png
614 ms
vmenuitem.png
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blockheader.png
474 ms
blockcontentbullets.png
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Akreditovane_stredisko2.gif
589 ms
postheadericon.png
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pdf.gif
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button.png
706 ms
footer_s.png
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footer_b.png
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livemarks.png
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menuseparator.png
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__utm.gif
12 ms
likebox.php
176 ms
hDvwL1_H7g-.css
47 ms
56WNbrUYLbL.css
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q68gy-v_YMF.js
51 ms
FJmpeSpHpjS.js
68 ms
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50 ms
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ct24.gif
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pQrUxxo5oQp.js
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vosasos.cz accessibility score
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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
vosasos.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
vosasos.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
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vosasos.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 Vosasos.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.
vosasos.cz
Open Graph description is not detected on the main page of Vosasos. 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: