QOI has some pretty major downsides. it only supports 8 bit SRGB, and is optimized for images with 8 bit transparency. Also, the handsome it uses seems to harm

QOI has some pretty major downsides. it only supports 8 bit SRGB, and is optimized for images with 8 bit transparency. Also, the handsome it uses seems to harm compression when entropy compression is used. Also, the focus on streaming means that the algorithm can't take advantage of 2d locality. QOI is really cool, but I think the author cut the final version of the spec too early, and intentionally closed it off to a future version with more improvements. With another year or 2 of development, I think it probably works have become ~10% more efficient and suitable for more usecases.