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/20170324093358393.jp...
site title:
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-Type image/jpeg
Last-Modified Fri, 24 Mar 2017 01:34:01 GMT
Accept-Ranges bytes
ETag ea4a3eb73ea4d21:0
Server Microsoft-IIS/7.5
X-Powered-By ASP.NET
Date Thu, 24 May 2018 08:11:33 GMT
Content-Length 9285

Load Info

page size9285
load time (s)0.78937
redirect count0
speed download0
server IP118.31.112.121


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