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:www.autoforum.cz/tmp/magazin/bd/Belaz_75710_prodej_za_bitcoiny_BTC_Perex_130_0.jp...
Url ContentJPEG Image
MIME Type / Internet Media Typeimage/jpeg
MIME Type image
File Extension.jpeg, .jpg
More Details (link to:)RFC 1314
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Header

HTTP/1.1 200 OK
Date Mon, 19 Feb 2018 17:31:38 GMT
Server Apache
Last-Modified Tue, 16 Jan 2018 06:43:23 GMT
ETag 6a2634-2d7b-562df0c0d98c0
Accept-Ranges bytes
Content-Length 11643
Content-Type image/jpeg

Load Info

page size11643
load time (s)0.163495
redirect count0
speed download0
server IP81.95.98.8


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