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/gadgets/html5/addata.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 Sat, 20 Oct 2018 03:41:26 GMT
Expires Sun, 21 Oct 2018 03:41:26 GMT
Content-Type text/javascript; charset=ISO-8859-1
ETag 7815514504935253301
X-Content-Type-Options nosniff
Content-Disposition attachment; filename= f.txt
Content-Encoding gzip
Server cafe
Content-Length 8804
X-XSS-Protection 1; mode=block
Cache-Control public, max-age=86400
Age 36803

Load Info

page size22762
load time (s)0.030973
redirect count0
speed download284247
server IP216.58.204.225


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