Bitmap image created in the Progressive Graphics File (PGF) format, which was designed to improve on the JPEG standard by reducing compression time and increasing compression ratios; supports lossy and lossless compression.
PGF compression performs best with natural and aerial images.
The PGF format was developed at the Institute of Theoretical Computer Science at ETH Zurich university.
Game file used by Pokémon Black and Pokémon White, the fifth generation of Pokémon games for the Nintendo DS game device; stores data for a mystery gift, which can be given to other players to unlock items and events in the game.
PGF files are located within Pokémon saved games (.SAV files) on Nintendo DS cartridges. They can be edited and imported into a SAV file using Pokesav or the Pokémon Mystery Gift Editor.