.BKP File Extension

Backup file that may be created by various programs; often created automatically to provide a backup in case the original file becomes corrupted; the ".bkp" extension is often appended to the file's original extension and may need to be removed in order for the file to open correctly.

Backup files most commonly use the .BAK extension.

Backup file created by Zapback, a simple Windows backup and restore utility; contains an uncompressed copy of the original file, but with the string " - Backup.bkp" appended to the original filename.

BKP files can only be used for creating backups of single files.