If you just want the common CD and DVD jewel case dimensions, here is a summary:

Type Width Height 1. CD Cover Insert 4.75″ (12.065 cm) 4.715″ (11.976 cm) 2. CD Cover Insert
(twice as wide, folded in half) 9.426″ (23.942 cm) 4.715″ (11.976 cm) 3. CD Tray Insert 5.814″ (14.77 cm) 4.633″ (11.77 [...]