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:adserver.1agency.de/advert/messure/hs/vag-2017/ai?v=%%CACHEBUSTER%...
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
Date Sat, 20 Oct 2018 06:33:11 GMT
Server Apache
Expires Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control no-store, no-cache, must-revalidate
Pragma no-cache
Set-Cookie adserver=159c8c7onnt6d87cusvbj5jlo4; path=/
Access-Control-Allow-Origin *
Transfer-Encoding chunked
Content-Type image/gif

Load Info

load time (s)0.07424
redirect count0
speed download0
server IP78.46.37.238


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