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/images/transparent.pn...
Url ContentPortable Network Graphics (PNG)
MIME Type / Internet Media Typeimage/png
MIME Type image
File Extension.png
More Details (link to:)RFC 2083
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

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 *
Date Fri, 15 Dec 2017 22:17:03 GMT
Expires Sat, 16 Dec 2017 22:17:03 GMT
Content-Type image/png
ETag 2462972746714251406
X-Content-Type-Options nosniff
Server cafe
Content-Length 67
X-XSS-Protection 1; mode=block
Cache-Control public, max-age=86400
Age 31375

Load Info

page size67
load time (s)0.002211
redirect count0
speed download0
server IP216.58.213.161


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