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:rev.linuxquestions.org/www/delivery/avw.php?zoneid=3&n=8cac36...
site title:
Url ContentGraphics Interchange Format
MIME Type / Internet Media Typeimage/gif
MIME Type image
File Extension.gif
More Details (link to:)Wikipedia: Graphics Interchange Format
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 200 OK
Server nginx
Date Sun, 27 May 2018 03:21:40 GMT
Content-Type image/gif
Transfer-Encoding chunked
Connection keep-alive
Pragma no-cache
Cache-Control no-cache, no-store, must-revalidate
Expires 0
Access-Control-Allow-Origin *
P3P CP= CUR ADM OUR NOR STA NID
Set-Cookie OAGEO=FR%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C; path=/
Set-Cookie OAID=f51394205d5f26d2a2a5ca49284df77a; expires=Mon, 27-May-2019 03:21:40 GMT; Max-Age=31536000; path=/
Set-Cookie OAVARS[8cac360]=%7B%22bannerid%22%3A%22%22%2C%22zoneid%22%3A%223%22%7D; path=/

Load Info

load time (s)1.710751
redirect count0
speed download0
server IP45.56.65.7


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