JGPAK

File Format
Name	JGPAK
Ontology	Electronic File Formats Archiving JGPAK
Extension(s)	.pak
Released	≤1996

JGPAK is the signature of an obscure compressed installer-archive format. It was used in at least two 32-bit Windows programs by Jan Goyvaerts: HelpScribble, and Magic MasterMind.

Identification

Files start with ASCII "JGPAK", possibly always followed by bytes 00 01.

Sample files

• HELPSCR.ZIP (HelpScribble 3.0.4) → *.pak
• Blackhawk For Windows 95 Nov. 1996 → games/magicmm.zip (Magic MasterMind) → MagicMM.pak