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/20171229103311561.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 10974
Content-Type image/jpeg
Last-Modified Fri, 29 Dec 2017 02:33:11 GMT
Accept-Ranges bytes
ETag 55fcd45e4d80d31:0
Server Microsoft-IIS/7.5
X-Powered-By ASP.NET
Date Wed, 21 Feb 2018 03:03:40 GMT

Load Info

page size10974
load time (s)1.602714
redirect count0
speed download0
server IP118.31.112.121


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