fb-invite
- Go to invitation page
- Wait friends to load
- Scroll to load more friends (not recommended more than 500 per fb-invitation)
- Start fb-invite
- Choose button for page or event
- Be patient, it may take some time, expecially if you invite tons of friends!
- Clone repository to your local machine or download it as zip file and extract it
- Open Google Chrome and in the address bar type "chrome:https://extensions"
- Enable developer mode and click "Load unpacked extension..."
- Select folder that you've got from the zip file or after cloning the repository