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:www.facebook.com/tr?id=973740392673214&ev=PageView&noscript=1 redirected to: www.facebook.com/tr?id=973740392673214&ev=PageView&noscript=...
Url ContentGraphics Interchange Format
MIME Type / Internet Media Typeimage/gif
MIME Type image
File Extension.gif
More Details (link to:)Wikipedia: Graphics Interchange Format
Powered by: Very Tiny URL Shortener at https://vturl.net VeryTinyURL

Header

HTTP/1.1 302 Found
Location htt????/www.facebook.com/tr?id=973740392673214&ev=PageView&noscript=1
Content-Type text/plain
Server proxygen
Date Fri, 20 Oct 2017 06:49:58 GMT
Connection keep-alive
Content-Length 0
HTTP/1.1 200 OK
Content-Type image/gif
Date Fri, 20 Oct 2017 06:49:58 GMT
Expires Fri, 20 Oct 2017 06:49:58 GMT
Last-Modified Fri, 21 Dec 2012 00:00:01 GMT
Cache-Control no-cache, must-revalidate, max-age=0
Set-Cookie fr=0AvwLhe6KG7EvPjYk..BZ6ZyW...1.0.BZ6ZyW.; expires=Thursday, 18-Jan-2018 06:49:58 GMT; path=/; domain=.facebook.com; HttpOnly; secure
Server proxygen
Connection keep-alive
Content-Length 44

Load Info

page size44
load time (s)0.010926
redirect count1
speed download0
server IP179.60.192.36


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