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:traffic.alexa.com/graph?u=wasser-sensor.d...
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


HTTP/1.1 200 OK
Date Thu, 18 Oct 2018 09:37:13 GMT
Content-Type image/png
Content-Length 3658
Connection keep-alive
Server nginx
X-Cache MISS from ip-172-30-33-196
X-Cache-Lookup MISS from ip-172-30-33-196:3128
Via 1.1 ip-172-30-33-196 (squid/3.5.20)

Load Info

page size3658
load time (s)0.083494
redirect count0
speed download0
server IP52.203.232.56

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