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/20160812165031655.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 9060
Content-Type image/jpeg
Last-Modified Tue, 13 Sep 2016 08:13:18 GMT
Accept-Ranges bytes
ETag c41039af96dd21:0
Server Microsoft-IIS/7.5
X-Powered-By ASP.NET
Date Tue, 20 Feb 2018 21:38:05 GMT

Load Info

page size9060
load time (s)3.651525
redirect count0
speed download0
server IP118.31.112.121


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