Convert j2c to tga Online: j2c2tga

You can use Tom's Editor to easily convert images from
JPEG-2000 Code Stream Syntax .J2C to Targa .TGA.
Tom's Editor is a free, online image manipulation and converter program.

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J2C

JPEG-2000 Code Stream Syntax is an image format with extension J2C.

TGA

Targa is an image format with extension TGA.