Warning: this is an unofficial, non-Twitter approved way to easily getting a list of your Twitter followers.
This is a really easy, can’t hurt anything method. Using just Google Chrome Developer Tools (part of the browser). But hey, if Twitter sends you a nasty letter, please don’t blame me.
Step 1. Open dev tools by hitting F12.
Step 2. Click the Console tab (maybe between Elements and Sources).
Step 3. Visit your followers page (ie: twitter.com/username/followers).
Step 4. Paste the below code into the Console (next to the “>”):
Step 5. When it finished at and the bottom of your page, run the below to get a list of your followers copied to the clipboard:
Do the above Step 4 on your “following” page, and then run the below to show people you’re following, but don’t follow you: