by Codehaveli on WordPress.org
Bitly URL Shortener uses the functionality of Bitly API to generate Bitly short link without leaving your WordPress site.

Settings Panel - Configure your Bitly API credentials and options
Bitly URL Shortener (Previously Codehaveli Bitly URL Shortener) uses the functionality of Bitly API to generate bitly short link automatically from your WordPress dashboard when you publish new post.
Bitly URL Shortener allows you to connect your WordPress Website to the Bitly API via access token and Group GUID.
This is not an official plugin of https://bitly.com
This plugin only connects your https://bitly.com account to your WordPress site.
Please read privacy and terms of service of Bitly before using this plugin.
Bug reports for Bitly URL Shortener are welcomed in our Bitly URL Shortener repository on GitHub. Please note that GitHub is not a support forum, and that issues that are not properly qualified as bugs will be closed.
For more info on Bitly and Codehaveli, check out the following: