3.3 sec in total
345 ms
2.6 sec
383 ms
Welcome to rengl.cz homepage info - get ready to check RENGL best content for Czech Republic right away, or after learning these important things about rengl.cz
RENGL: Plakátovací plochy v Česku, na Slovensku a v Polsku
Visit rengl.czWe analyzed Rengl.cz page load time and found that the first response time was 345 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
rengl.cz performance score
name
value
score
weighting
Value7.2 s
1/100
10%
Value13.7 s
0/100
25%
Value9.7 s
11/100
10%
Value110 ms
97/100
30%
Value0.547
13/100
15%
Value8.2 s
40/100
10%
345 ms
782 ms
115 ms
208 ms
221 ms
Our browser made a total of 56 requests to load all elements on the main page. We found that 93% of them (52 requests) were addressed to the original Rengl.cz, 4% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (782 ms) belongs to the original domain Rengl.cz.
Page size can be reduced by 536.8 kB (47%)
1.1 MB
595.4 kB
In fact, the total size of Rengl.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. 35% of websites need less resources to load. Javascripts take 605.6 kB which makes up the majority of the site volume.
Potential reduce by 16.0 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 2.8 kB, which is 13% 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 16.0 kB or 75% of the original size.
Potential reduce by 8.9 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. RENGL images are well optimized though.
Potential reduce by 432.3 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 432.3 kB or 71% of the original size.
Potential reduce by 79.7 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. Rengl.cz needs all CSS files to be minified and compressed as it can save up to 79.7 kB or 83% of the original size.
Number of requests can be reduced by 31 (58%)
53
22
The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RENGL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
rengl.cz
345 ms
www.rengl.cz
782 ms
slimbox2.css
115 ms
menu.css
208 ms
layout1.css
221 ms
jquery-ui-1.8.17.custom.css
226 ms
validationEngine.jquery.css
219 ms
colorbox.css
224 ms
jquery.dataTables.css
227 ms
jquery-1.7.1.min.js
417 ms
jquery-ui-1.8.17.custom.min.js
553 ms
jquery.ui.datepicker-cs.js
328 ms
swfobject.js
329 ms
jquery.uploadify-3.1.js
439 ms
script1.js
329 ms
jquery.validationEngine.js
439 ms
jquery.validationEngine-cz.js
440 ms
jquery.lazyload.min.js
440 ms
jquery.colorbox-min.js
518 ms
jquery.dataTables.min.js
592 ms
galleria-1.2.8.min.js
549 ms
slimbox2.js
602 ms
brand
14 ms
brand
42 ms
bg_body.png
149 ms
flag_cr.gif
148 ms
flag_sl.gif
149 ms
flag_de.gif
149 ms
flag_anj.gif
145 ms
flag_pl.gif
147 ms
i-foto-vylep-cze.gif
206 ms
input-vyhledat-cze.jpg
225 ms
logo-rengl-cze.png
217 ms
165x124_182293_2867-3177-f-rcz.jpg
216 ms
165x124_379849_2860-3167-f-rcz.jpg
226 ms
165x124_102372_2858-0744-f-rcz.jpg
226 ms
165x124_99731_2863-1086-f-rcz.JPG
307 ms
165x124_164383_2848-1118-f-rcz.jpg
322 ms
logo-rengl.jpg
321 ms
175x190_37201_2847-tisk-plakaty.jpg
443 ms
175x190_16777_2700-info-letak3.jpg
440 ms
175x190_18517_2419-2420-i888.jpg
329 ms
175x190_45261_2420-2419-letak.png
510 ms
175x190_11654_2580-info-letak-pravy-sloupec.jpg
427 ms
bg_header2.png
743 ms
archiv.png
433 ms
nalepka.jpg
528 ms
vstupy.jpg
537 ms
ga.js
32 ms
overlay.png
472 ms
controls.png
472 ms
border.png
535 ms
loading_background.png
570 ms
loading.gif
575 ms
__utm.gif
18 ms
print.css
122 ms
rengl.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.
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
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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Some elements have a [tabindex] value greater than 0
rengl.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
rengl.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
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rengl.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 Rengl.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.
rengl.cz
Open Graph description is not detected on the main page of RENGL. 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: