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:scontent.cdninstagram.com/t51.2885-15/s640x640/sh0.08/e35/25005618_143216023002899_8836246289206214656_n.jp...
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
Last-Modified Wed, 13 Dec 2017 16:19:38 GMT
Content-Type image/jpeg
Timing-Allow-Origin *
Access-Control-Allow-Origin *
Expires Tue, 06 Feb 2018 04:14:51 GMT
Cache-Control max-age=1209600, no-transform
Date Tue, 23 Jan 2018 04:14:52 GMT
X-FB-Edge-Debug qW9gc_G0sVsV4-jAGVEr2cnbFeqLAcad4RBc6_txtO44CGougVda5zjyBPAPo9KD-n1xwnGVc5WVznudKuzHtw
Connection keep-alive
Content-Length 21048

Load Info

page size21048
load time (s)0.565122
redirect count0
speed download0
server IP179.60.192.52


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