Board Thread:Suggestions and Ideas/@comment-24191375-20150411021045/@comment-5106053-20150415045352

There are more efficient compression algorithms than jpeg, take a look at Google's open source image compression algorithm.

Source code for the format can be found here if your're interested, it's written in C.

For PTC, lossless compression would probably be easier to achieve. Also, since PTC has rather limited images(palette of 256 colors, 256&times;192 image size, etc.), lossless compression would probably work better for most images.