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 Tue, 17 Jul 2018 19:28:03 GMT
Expires Tue, 17 Jul 2018 19:28:03 GMT
Cache-Control private, max-age=3600
Content-Type text/javascript; charset=ISO-8859-1
ETag 6943667769334745717
X-Content-Type-Options nosniff
Content-Disposition attachment; filename= f.txt
Content-Encoding gzip
Server cafe
Content-Length 27467
X-XSS-Protection 1; mode=block

Load Info

page size74935
load time (s)1.522658
redirect count0
speed download18038
server IP172.217.18.194


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