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/r20171129/r20170110/show_ads_impl.j...
favicon.ico:
site title:

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 19:28:12 GMT
Expires Tue, 17 Jul 2018 19:28:12 GMT
Cache-Control private, max-age=1209600
Content-Type text/javascript; charset=ISO-8859-1
ETag 7992484683137750111
X-Content-Type-Options nosniff
Content-Disposition attachment; filename= f.txt
Content-Encoding gzip
Server cafe
Content-Length 70298
X-XSS-Protection 1; mode=block

Load Info

page size189830
load time (s)0.028548
redirect count0
speed download2462449
server IP172.217.18.194


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