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:cheapdigitaldownload.com/wp-content/uploads/admin-ajax-12-14-150x150.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
Date Tue, 23 Jan 2018 07:52:58 GMT
Server Apache
Last-Modified Mon, 11 Dec 2017 07:19:28 GMT
ETag 18bb-5600b5ad667a3
Accept-Ranges bytes
Content-Length 6331
Content-Type image/jpeg
Age 0
Connection keep-alive

Load Info

page size6331
load time (s)0.010261
redirect count0
speed download0
server IP145.239.104.14


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