There is only one file type that uses the .JWC extension:
JewelCase Maker File
A JWC file contains a design for a CD jewel case created by NTI JewelCase Maker, a Windows program used to create jewel case designs. It stores information about a jewel case design, which may include images, graphics, and text. JWC files typically contain multiple designs, which include the front, inside, and back of a jewel case, a CD/DVD label, a DVD insert, and a DVD cover design.
|NTI JewelCase Maker||Free|
Updated: December 25, 2019