3.2 sec in total
398 ms
2.7 sec
99 ms
Click here to check amazing ER content for Czech Republic. Otherwise, check out these important facts you probably never knew about er.cz
Nejkvalitn?j?? p?esm?rov?n? pro V? web, kter? m??ete z?skat zdarma! Krom? samotn?ho p?esm?rov?n? 3. ??du (dvoup?smen? dom?ny er.cz), v?m nab?z?me tak? e-mailov? alias, statistiky, velk? mo?nosti nasta...
Visit er.czWe analyzed Er.cz page load time and found that the first response time was 398 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
er.cz performance score
name
value
score
weighting
Value1.9 s
86/100
10%
Value3.0 s
79/100
25%
Value2.9 s
95/100
10%
Value60 ms
99/100
30%
Value0
100/100
15%
Value3.4 s
93/100
10%
398 ms
1117 ms
107 ms
49 ms
359 ms
Our browser made a total of 22 requests to load all elements on the main page. We found that 73% of them (16 requests) were addressed to the original Er.cz, 14% (3 requests) were made to D.wedosas.net and 5% (1 request) were made to I.czin.eu. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Er.cz.
Page size can be reduced by 27.3 kB (31%)
88.6 kB
61.3 kB
In fact, the total size of Er.cz main page is 88.6 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. Only 10% of websites need less resources to load. HTML takes 32.7 kB which makes up the majority of the site volume.
Potential reduce by 25.8 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 6.5 kB, which is 20% 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 25.8 kB or 79% of the original size.
Potential reduce by 1.3 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. ER images are well optimized though.
Potential reduce by 87 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 80 B
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. Er.cz needs all CSS files to be minified and compressed as it can save up to 80 B or 11% of the original size.
Number of requests can be reduced by 6 (30%)
20
14
The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ER. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.
er.cz
398 ms
www.er.cz
1117 ms
styly2.css
107 ms
d.js
49 ms
b
359 ms
czinpan.png
520 ms
count.asp
569 ms
bg.gif
108 ms
webceskym.png
214 ms
s.gif
312 ms
eredirect.gif
328 ms
favorites.gif
312 ms
p.gif
312 ms
prihlas.gif
315 ms
pres.gif
329 ms
redir.gif
416 ms
chci1.gif
416 ms
proc.gif
423 ms
hledej.gif
418 ms
zkus.gif
428 ms
6644-1-tqToB.jpg
486 ms
matomo.js
696 ms
er.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.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
<input type="image"> elements do not have [alt] text
Form elements do not have associated labels
er.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
er.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
CS
CS
WINDOWS-1250
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Er.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 Er.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.
er.cz
Open Graph description is not detected on the main page of ER. 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: