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:spotify.i.lithium.com/t5/image/serverpage/avatar-name/Country/avatar-theme/candy/avatar-collection/Spotify_New/avatar-display-size/message/version/1_1?xdesc=1....
site title:
Url ContentPortable Network Graphics (PNG)
MIME Type / Internet Media Typeimage/png
MIME Type image
File Extension.png
More Details (link to:)RFC 2083
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Header

HTTP/1.1 200 OK
Cache-Control max-age=900
Content-Disposition inline
Content-Type image/png;charset=UTF-8
Date Sun, 17 Jun 2018 23:41:10 GMT
Expires Mon, 17 Jun 2019 23:41:10 GMT
Last-Modified Sun, 17 Jun 2018 23:31:50 GMT
Server Apache
Set-Cookie LiSESSIONID=4583AC96F1470E8B85DFCB7B24920BA9; Path=/; HttpOnly
Content-Length 2221

Load Info

page size2221
load time (s)0.004626
redirect count0
speed download0
server IP93.184.220.97


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