4.4 sec in total
742 ms
3.2 sec
428 ms
Visit esn.zcu.cz now to see the best up-to-date Esn Zcu content for Czech Republic and also check out these interesting facts you probably never knew about esn.zcu.cz
Visit esn.zcu.czWe analyzed Esn.zcu.cz page load time and found that the first response time was 742 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
esn.zcu.cz performance score
name
value
score
weighting
Value3.0 s
49/100
10%
Value3.0 s
78/100
25%
Value7.2 s
30/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value3.0 s
96/100
10%
742 ms
121 ms
28 ms
41 ms
76 ms
Our browser made a total of 89 requests to load all elements on the main page. We found that 13% of them (12 requests) were addressed to the original Esn.zcu.cz, 30% (27 requests) were made to Static.xx.fbcdn.net and 26% (23 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Esn.zcu.cz.
Page size can be reduced by 323.9 kB (15%)
2.1 MB
1.8 MB
In fact, the total size of Esn.zcu.cz main page is 2.1 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. 45% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.
Potential reduce by 13.3 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. This page needs HTML code to be minified as it can gain 2.0 kB, which is 11% 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 13.3 kB or 73% of the original size.
Potential reduce by 141.6 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. Esn Zcu images are well optimized though.
Potential reduce by 148.2 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 148.2 kB or 62% of the original size.
Potential reduce by 20.8 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. Esn.zcu.cz needs all CSS files to be minified and compressed as it can save up to 20.8 kB or 75% of the original size.
Number of requests can be reduced by 40 (47%)
86
46
The browser has sent 86 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Esn Zcu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.
esn.zcu.cz
742 ms
styles.css
121 ms
css
28 ms
css
41 ms
all.js
76 ms
embed
71 ms
analytics.js
34 ms
header.jpg
614 ms
logo.png
505 ms
cz.png
506 ms
en.png
500 ms
esn.png
272 ms
colbg.jpg
1228 ms
nadpis.jpg
502 ms
obsah.png
622 ms
bottom.png
990 ms
collect
35 ms
embed
108 ms
like.php
91 ms
33 ms
xd_arbiter.php
63 ms
xd_arbiter.php
132 ms
vpc6VNjRPXV.js
130 ms
LVx-xkvaJ0b.png
144 ms
f7e12ba16863d79ebc50b5ad512d0dd5embedcompiled_fastui.css
34 ms
f7e12ba16863d79ebc50b5ad512d0dd5embedcompiled__en.js
71 ms
client.js
95 ms
cb=gapi.loaded_0
40 ms
postmessageRelay
40 ms
api.js
31 ms
core:rpc:shindig.random:shindig.sha1.js
73 ms
2536007149-postmessagerelay.js
66 ms
logo-plus.png
33 ms
googlelogo_color_46x16dp.png
54 ms
proxy.html
61 ms
cb=gapi.loaded_0
12 ms
events
111 ms
events
71 ms
print.css
119 ms
ping
29 ms
like_box.php
243 ms
FbUd6dZS1Af.css
17 ms
dGJLq38YL-C.css
34 ms
f7m6HODnCDd.css
51 ms
i5_N_HL0uEJ.css
72 ms
Msuaq9yC6iC.css
87 ms
ofK-VoHLA9o.css
62 ms
ZmP1PYDP7FC.css
58 ms
kCqR6fITdsR.css
58 ms
_rx8naC75Dy.js
67 ms
ZRUHGSRAt8d.js
111 ms
ICDbTSzjQEg.js
85 ms
TTCre3391I0.js
84 ms
njO1TPvGzoR.js
108 ms
b_6HNn_J2BZ.js
109 ms
7cm7D75Y0Sf.js
121 ms
rFmE1g6Dkoz.js
144 ms
10407946_10153127952382558_9205402792971841678_n.jpg
182 ms
1233389_10151883263662558_160877290_n.jpg
64 ms
10363695_877141718963373_3149516457326555952_n.jpg
75 ms
12742026_10207717481448225_7628333667103600076_n.jpg
150 ms
11202819_821355301268532_3424640158080590290_n.jpg
76 ms
10644830_10202906407640599_8693792819357720364_n.jpg
128 ms
10354686_10150004552801856_220367501106153455_n.jpg
79 ms
12239479_10207952907491558_4538520957477491418_n.jpg
160 ms
12439308_10205269127875647_4387869808318212990_n.jpg
113 ms
1511205_10201873605400990_8609801145115074496_n.jpg
229 ms
10399361_10201285635378654_3329750197076281636_n.jpg
108 ms
1661452_713453382087503_2548743445187611792_n.jpg
175 ms
12795361_180335765675090_1173783746101645638_n.jpg
142 ms
11201105_10153777511979656_6447415112167115801_n.jpg
208 ms
12744683_926995394065371_53096844535888312_n.jpg
242 ms
12804818_10153989000677558_8101933229439186883_n.jpg
226 ms
12509211_10153977441497558_9114154227216438271_n.jpg
313 ms
12717407_1065461016851059_1850186264151585485_n.jpg
223 ms
12745655_10153961599732558_6057879359067316859_n.jpg
276 ms
12745869_10153977769522558_3655903667779628260_n.jpg
282 ms
12745446_10153977769527558_5553385521644335635_n.jpg
264 ms
12734131_10153977769537558_7265949163378373040_n.jpg
377 ms
12321582_10153977769507558_6889534649596130541_n.jpg
318 ms
wL6VQj7Ab77.png
23 ms
s7jcwEQH7Sx.png
25 ms
QDwYpIaRyfG.png
27 ms
pimRBh7B6ER.png
26 ms
WC6AgLuP72p.png
23 ms
K0srxReVLKP.png
23 ms
a-ZN6WoEOje.png
39 ms
I6-MnjEovm5.js
18 ms
vlXaquuXMrr.js
35 ms
esn.zcu.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
esn.zcu.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
esn.zcu.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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Esn.zcu.cz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Esn.zcu.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.
esn.zcu.cz
Open Graph description is not detected on the main page of Esn Zcu. 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: