If you are not sure if the website you want to visit is safe, you can check it out here. Enter the address (url) of the website and see the invisible elements, such as a header or meta data.
site address:i.astratex.cz/prg121/b_Maia4D_cerna.jp...
favicon.ico:
URL does not point to a web page (html/xhtml) or read error or page not found. (5002)
Url ContentJPEG Image
MIME Type / Internet Media Typeimage/jpeg
MIME Type image
File Extension.jpeg, .jpg
More Details (link to:)RFC 1314
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
Cache-Control public
Content-Type image/jpeg
Last-Modified Mon, 25 Mar 2019 09:31:13 GMT
Accept-Ranges bytes
ETag 19ccf67cede2d41:0
Server Microsoft-IIS/8.5
Access-Control-Allow-Origin *
Date Wed, 27 May 2020 15:21:59 GMT
Content-Length 699

Load Info

page size699
load time (s)0.063075
redirect count0
speed download11082
server IP193.105.159.25


* all occurrences of the string "http://" have been changed to "htt???/"