Bitly vs. Goo.gl

http://www.freetech4teachers.com/2017/05/bitly-vs-googl.html

Bitly – Pros & Cons
Pro – If you create a free Bitly.com account you can customize your shortened URLs so that they spell words or at least have initials and numbers that are related to an event.

Con –  A few years ago Bitly removed the option to create QR codes while also shortening URLs. So if you need a QR code to go with your shortened URL, you might want to try Goo.gl.

Goo.gl – Pros & Cons
Pro – Goo.gl is available in your Google Account. You can create shortened URLs and QR codes at the same time in Goo.gl.

Con – Goo.gl doesn’t let you customize the shortened URL that is generated for you. You’re stuck with the randomly generated characters that are given to you.

+++++++++++++++
more on link shorteners in this IMS blog
https://blog.stcloudstate.edu/ims?s=link+shortener