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/Fox/avatar-theme/candy/avatar-collection/Spotify_New/avatar-display-size/message/version/1_1?xdesc=1....
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
Cache-Control max-age=900
Content-Disposition inline
Content-Type image/jpeg;charset=UTF-8
Date Fri, 23 Feb 2018 02:25:54 GMT
Expires Sat, 23 Feb 2019 02:25:54 GMT
Last-Modified Fri, 23 Feb 2018 02:23:39 GMT
Server Apache
Set-Cookie LiSESSIONID=7CBB695EB3CD4175639BD2935ADE405C; Path=/; HttpOnly
Content-Length 2733

Load Info

page size2733
load time (s)0.952883
redirect count0
speed download0
server IP93.184.220.97


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