Obviously recompressing with a lossy format involves loss of data each time. The idea of re-compressing to JPEG-2000 over standard JPEG is to keep the same perceptual quality at a significantly reduced size. scanned images), and more devices support PDFs than the comic book formats. Also PDFs are ideal for fixed size pages (i.e. I am very familiar with CBR it’s just a renamed RAR file, which is technically patent encumbered, and does not have standard tools built in to the major OSes that ZIP and PDF do.

Trap 'rm -rf '$' ).pdf' *.jp2Ĭategories Linux, Raspberry Pi Tags Linux It does, however work perfectly on a Raspberry Pi (and probably Debian). Note: This does not work in Ubuntu linux, as they inexplicably removed all support for JPEG-2000. This script requires the imagemagick and img2pdf packages. I have a Remarkable 2, and it’s a perfect reader for manga and comics (at least black and white ones), and it handles PDFs better, so I wrote this script to convert a CBZ to a PDF using JPEG-2000 for compression. And because PDF readers do support the JPEG-2000 format, it seems even more ideal as a format for comics to make the file more portable, and smaller with no perceptual loss of quality. Yet when they have a content that lends itself perfectly to the PDF format, like comics, they instead use an unnecessary made-up format that is just a renamed ZIP or RAR file.Īlso, for some reason, JPEG-2000 as a format seems to have never gained much traction. novels), they use the PDF format, which is simply awful for the medium. For some strange reason, in the land of the internet when people create books with flowable text (i.e.

Convert pdf to cbr or cbz