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:pagead2.googlesyndication.com/pagead/js/adsbygoogle.j...
favicon.ico:
URL does not point to a web page (html/xhtml) or read error or page not found. (5002)

Header

HTTP/1.1 200 OK
P3P policyref= htt???/www.googleadservices.com/pagead/p3p.xml , CP= NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC
Timing-Allow-Origin *
Vary Accept-Encoding
Date Thu, 18 Oct 2018 09:01:02 GMT
Expires Thu, 18 Oct 2018 09:01:02 GMT
Cache-Control private, max-age=3600
Content-Type text/javascript; charset=ISO-8859-1
ETag 6971834261583634615
X-Content-Type-Options nosniff
Content-Disposition attachment; filename= f.txt
Content-Encoding gzip
Server cafe
Content-Length 27975
X-XSS-Protection 1; mode=block

Load Info

page size76088
load time (s)0.015985
redirect count0
speed download1750078
server IP216.58.215.34


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