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:img.blesk.cz/img/1/normal300/5983247-img-bezdomovci-pribeh-psi-veterinari-v0.jpg?v=...
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
Server nginx
Date Sun, 08 Dec 2019 15:36:25 GMT
Content-Type image/jpeg
Content-Length 29944
Connection keep-alive
Last-Modified Thu, 17 Oct 2019 13:23:56 GMT
ETag 5da86b6c-74f8
X-Served-By mogcache-rascz-01
Expires Tue, 10 Dec 2019 15:36:25 GMT
Cache-Control max-age=172800
X-Cached-By mogcache-rascz-01
X-Cache-Status MISS
X-TsUpstream 1575819385.124
X-TsResponse 1575819385.135
X-Cached-By cnc-imgcache-05 - MISS
Access-Control-Allow-Origin *
Accept-Ranges bytes

Load Info

page size29944
load time (s)0.627111
redirect count0
speed download47749
server IP91.235.52.120

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