With Bitly's browser extension, you can add Bitly to your Firefox toolbar and quickly shorten a URL without leaving the page.
To install the Bitly Firefox extension:
- In your Firefox browser, go to the Bitly extension in the Firefox Add-ons page.
- Click Add to Firefox.
- On the confirmation pop-up, you can choose whether to allow the Bitly extension to run when you use a Private Window. Click Okay to close the pop-up.