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:sankawa.nl/files/IMG_1.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 Sun, 19 Nov 2017 19:36:41 GMT
Server Apache/2
Last-Modified Fri, 10 Mar 2017 18:01:31 GMT
ETag 788c-54a6426c807da
Accept-Ranges bytes
Content-Length 30860
Content-Type image/jpeg

Load Info

page size30860
load time (s)0.038679
redirect count0
speed download0
server IP81.26.217.65


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