Form History Control is a Firefox extension designed for web development, focusing on saving, viewing, and managing text form data. This tool captures text from input fields in real-time, ensuring that users can recover their work after unexpected disruptions such as session timeouts or browser crashes. In addition to data recovery, it also serves as an efficient form filler, restoring information in text fields and various input controls, including radio buttons and checkboxes, based on the most or last used data.

The extension offers robust features for managing stored data, including the ability to export and import form history between different browser configurations. It utilizes indexedDB for storing data, making it essential for users to enable cookies to ensure proper functionality. This add-on operates under the new WebExtensions API, creating a private form history database to maintain user data. Users can also retrieve data from previous versions using compatible export files or a standalone Java application.