.PREF File Extension
File Type 1Preferences File
What is a PREF file?
Settings file used by various applications; often used as an application support file that contains program preferences such as program defaults or other user specified application preferences; uses the generic extension ".pref," which is short for "preferences."
Example programs that use PREF files include GTKRadiant (local.pref), Wings 3D, and Amazon's Kindle e-Reader software (reader.pref).
File Type 2Macintosh Preferences File
.PREF File Association 2
Generic settings file used by Mac OS X applications; saves settings and user preferences for an application; may be saved with the application in the installation directory.
NOTE: Mac OS X user preferences in the [user]/Library/Preferences/ directory use the .PLIST format for preferences.