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/56f5b4ada56b896fabcc1c00c547d6d1?s=96&d=retro&r=...
site title:
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, 22 May 2018 17:38:43 GMT
Content-Type image/png
Content-Length 372
Connection keep-alive
Last-Modified Wed, 11 Jan 1984 08:00:00 GMT
Link <htt????/www.gravatar.com/avatar/56f5b4ada56b896fabcc1c00c547d6d1?s=96&d=retro&r=g>; rel= canonical
Access-Control-Allow-Origin *
X-nc HIT cdg 2
Accept-Ranges bytes
Expires Tue, 22 May 2018 17:43:43 GMT
Cache-Control max-age=300
Source-Age 693218

Load Info

page size372
load time (s)0.004862
redirect count0
speed download0
server IP192.0.73.2


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