History Cleaner Firefox addon that deletes history older than a specified amount of days. Options

Behavior
- Decides what history the extension will delete when it triggers.
- Either disabled, delete old history, or delete all history.
- Defaults to disabled, so the extension doesn’t do anything until you configure it.
Number of Days to Keep History
- Delete history older than midnight on the specified number of days ago.
- Only has effect if behavior is set to delete old history.
- Defaults to 0.
Trigger Mode
- Whether the extension triggers on idle, on browser startup, or at a set interval.
- Defaults to idle.
Idle Length
- Amount of time in seconds the browser should idle before triggering.
- Only has effect if trigger mode is set to idle.
- Defaults to 60, minimum 15.
Timer Interval
- Interval in minutes between triggering.
- Only has effect if trigger mode is set to timer.
- Defaults to 1440 (24 hours), Minimum 1

Permissions

history
- Used to clear browser history
storage
- Used to save user options
idle
- Used to detect when the browser is idle for the idle trigger mode
notifications
- Used to send a notification when history is cleared
- Notifications are only sent if the user enables notifications in options
alarms
- Used to set a timer for the timer trigger mode.

Acknowledgements Icons used in History Cleaner are from Pictogrammers, formerly Material Design Icons. (Pictogrammers Free License) Links Available for Firefox, Available for Chrome