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:img.o571.com/fc/ad/20151230172909012.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
Cache-Control max-age=2592000
Content-Length 8229
Content-Type image/jpeg
Last-Modified Wed, 31 Aug 2016 07:33:54 GMT
Accept-Ranges bytes
ETag 5da5f165a3d21:0
Server Microsoft-IIS/7.5
X-Powered-By ASP.NET
Date Wed, 21 Feb 2018 09:12:45 GMT

Load Info

page size8229
load time (s)2.658951
redirect count0
speed download0
server IP118.31.112.121


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