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/vp/b90355d61e2d4589be15937ec24eca4b/5B79DB20/t51.2885-15/s150x150/e35/c180.0.719.719/30841620_2041459139435491_8321239037075521536_n.jp...
site title:
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 Tue, 24 Apr 2018 06:17:54 GMT
X-Unified-Storage-Connection-Used 1
Content-Type image/jpeg
Timing-Allow-Origin *
Access-Control-Allow-Origin *
Expires Tue, 05 Jun 2018 17:33:07 GMT
Cache-Control max-age=1209600, no-transform
Date Tue, 22 May 2018 17:33:07 GMT
X-FB-Edge-Debug A9ucy1CNsH9VyESX4qbgob4NzQNnHB-4ywvuyj-rERu8NfuG2MJbvwPSY8BYkIK1ZJ5BCHurMKcL7rg2_5F6fA
Connection keep-alive
Content-Length 7824

Load Info

page size7824
load time (s)2.511776
redirect count0
speed download0
server IP157.240.21.63


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