This is a great form-filling extension that detects data that you enter in a form and creates a new profile based on this data or updates an existing profile. It is a free form-filling app that can work with multiple profiles and create random strings from a Regular Expression.

You can use AutoFill Forms to generate random passwords for you. It is possible to find element positions based on their physical location (form index and element index).

The AutoFill Forms extension also has import/export preferences to import/export a list of filled forms. It is not storing profile data in its own database; it is just fetching data from your profile, so it is not creating backups for security reasons.