J Wavelet Image Codec
J Wavelet Image Codec format, or JWIC file format, is a raster image format associated with the JavaWIC and JWICTranslator software by Sasha Chukov. It uses wavelet compression. The J stands for Java. It is notable in that it is supported by XnView.
One version of the format starts with signature bytes
1b 7a fb 30.
A later version starts with
fa de ba be.