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:secure.gravatar.com/avatar/d8bda8c9abce9a28ab6dc341801bbab8?s=160&d=identicon&r=...
Url ContentPortable Network Graphics (PNG)
MIME Type / Internet Media Typeimage/png
MIME Type image
File Extension.png
More Details (link to:)RFC 2083
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
Server nginx
Date Tue, 21 Nov 2017 06:15:53 GMT
Content-Type image/png
Content-Length 1581
Connection keep-alive
Last-Modified Wed, 11 Jan 1984 08:00:00 GMT
Link <htt????/www.gravatar.com/avatar/d8bda8c9abce9a28ab6dc341801bbab8?s=160&d=identicon&r=g>; rel= canonical
Access-Control-Allow-Origin *
X-nc MISS ams 1
Accept-Ranges bytes
Expires Tue, 21 Nov 2017 06:20:53 GMT
Cache-Control max-age=300
Source-Age 0

Load Info

page size1581
load time (s)0.17215
redirect count0
speed download0
server IP192.0.73.2


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