Ive produced a number of brief video demonstrations of how this trick works. This is the Instagram video that I made about it. This is the YouTube video that I made about it.

You can try this with my Bitly link of.
bit.ly/ 2ZZnuP2 which will take you to the registration page for my Practical Ed Tech Newsletter (.
https://practicaledtech.com/weekly-newsletter/). If you try the exact same link however add “+” to the end of it so it reads like this.
bit.ly/ 2ZZnuP2+ you will go to the Bitly page where I shortened my initial URL.

Bitly is a hassle-free tool for producing short URLs to share in location of long URLs. Some people utilize Bitly to attempt to mask URLs to try to get you to click on dubious links.
The trick is to just include a “+” to the end of any Bitly URL. When you include the “+” the URL will reroute to Bitly rather of to whatever the initial URL was. That will then show you the Bitly page on which the shortened URL is hosted and will show you what the initial link was..