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:s0.2mdn.net/ads/studio/cached_libs/tweenmax_1.19.0_643d6911392a3398cb1607993edabfa7_min.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
Accept-Ranges bytes
Vary Accept-Encoding
Content-Encoding gzip
Content-Type text/javascript
Access-Control-Allow-Origin *
Timing-Allow-Origin *
Content-Length 37530
Date Wed, 23 May 2018 22:42:33 GMT
Expires Wed, 23 May 2018 22:42:33 GMT
Cache-Control public, max-age=0
Last-Modified Tue, 06 Sep 2016 20:51:14 GMT
X-Content-Type-Options nosniff
Server sffe
X-XSS-Protection 1; mode=block

Load Info

page size111633
load time (s)0.037254
redirect count0
speed download1007408
server IP216.58.206.230


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