Built on-top of the Google Firebase Dynamic Links framework, "Bjorn's Page Links" is a bitly alternative built for G Suite documents.

You can create and distribute shortlinks to any G Suite document, and later go and change which document the permalink points to - quite convenient sometimes...

The shortlinks can be turned into "trick links", for example links that will force the user to copy a document, links that will show the PDF version etc, see about page for all available tricks.

Available as an add-on for Docs, Sheets and Slides as well as a web app for managing all your created links.