JBIG2 is hardly obscure. It is billed just as prominently on the official JPEG site as JPEG and JPEG2000. It is useless to someone that wants to compress arbit

JBIG2 is hardly obscure. It is billed just as prominently on the official JPEG site as JPEG and JPEG2000. It is useless to someone that wants to compress arbitrary images, since it is bi-level only, I'd ignore it too if I wanted to compress a photograph. Not having an open specification hurts. The "last draft" is available, but the final was sacrificed to someone's business model.