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:tpc.googlesyndication.com/pagead/js/r20171129/r20110914/abg.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 19:28:58 GMT
Expires Tue, 31 Jul 2018 19:28:58 GMT
Cache-Control public, max-age=1209600
Content-Type text/javascript; charset=ISO-8859-1
ETag 13281636799665614287
X-Content-Type-Options nosniff
Content-Disposition attachment; filename= f.txt
Content-Encoding gzip
Server cafe
Content-Length 23363
X-XSS-Protection 1; mode=block

Load Info

page size74301
load time (s)0.016229
redirect count0
speed download1439583
server IP216.58.205.1


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