https://drive.google.com/file/d/1-Jy...ew?usp=sharing
That is a book I have been using for testing for the past year..it's an MRC encoded book from Internet Archive. 35 MB but it is JP2/JBIG2 mask. JP2 is an extremely heavy format. it takes 200ms for an optimized decoder on a core i7 to decode. On an e-ink reader, no chance of decoding in under a second. It takes 45 seconds to load the first page on my Kobo Clara BW using the latest version of KoReader.
https://drive.google.com/file/d/1gD7...ew?usp=sharing
This is a DjVu of the same book processed by my program. it's 17mb and only because i used high quality and high resolution output; it could be half as large with the right settings. it opens in under 200ms. page turns in under the same. it is optimized for the device. the device doesn't have to choke on a per page temporary adjustment, taking 30+ seconds each time.
Now do you all see the utility of the program? It is doing something on the desktop that an e-ink reader simply is not designed to do. E-ink readers are designed for text reading, and have to be hacked to handle complex image formats, and they still don't do them well. my program fills all those gaps, especially with the dithering option.