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:analytics.twitter.com/i/adsct?txn_id=nwc7o&p_id=Twitter&tw_sale_amount=0&tw_order_quantity=0 redirected to: analytics.twitter.com/i/adsct?txn_id=nwc7o&p_id=Twitter&tw_sale_amount=0&tw_order_quantity=...

Header

HTTP/1.1 301 Moved Permanently
content-length 0
date Wed, 24 Jan 2018 05:42:10 GMT
location htt????/analytics.twitter.com/i/adsct?txn_id=nwc7o&p_id=Twitter&tw_sale_amount=0&tw_order_quantity=0
server tsa_f
set-cookie personalization_id= v1_DFd6uSVwMT7rZTYkdsl3aQ== ; Expires=Fri, 24 Jan 2020 05:42:10 UTC; Path=/; Domain=.twitter.com
set-cookie guest_id=v1%3A151677253011251842; Expires=Fri, 24 Jan 2020 05:42:10 UTC; Path=/; Domain=.twitter.com
x-connection-hash 37e5d4346d65dfe74d3d885da4a68cac
x-response-time 115
HTTP/1.1 200 OK
cache-control no-cache, no-store, must-revalidate, pre-check=0, post-check=0
content-length 43
content-type image/gif;charset=utf-8
date Wed, 24 Jan 2018 05:42:10 GMT
expires Tue, 31 Mar 1981 05:00:00 GMT
last-modified Wed, 24 Jan 2018 05:42:10 GMT
pragma no-cache
server tsa_f
set-cookie personalization_id= v1_S3H0WOJz/aojWC3bYRT7hw== ; Expires=Fri, 24 Jan 2020 05:42:10 UTC; Path=/; Domain=.twitter.com
set-cookie guest_id=v1%3A151677253026650200; Expires=Fri, 24 Jan 2020 05:42:10 UTC; Path=/; Domain=.twitter.com
status 200 OK
strict-transport-security max-age=631138519
x-connection-hash acce769295e07f0522ab9c153314afbe
x-content-type-options nosniff
x-frame-options SAMEORIGIN
x-response-time 119
x-transaction 000f7cc700aeaf69
x-twitter-response-tags BouncerCompliant
x-xss-protection 1; mode=block; report=htt????/twitter.com/i/xss_report

Load Info

page size43
load time (s)0.32943
redirect count1
speed download0
server IP104.244.42.195


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