You can drag and drop it too — we’re flexible!
We’ll take care of the rest — it only takes a few seconds.
Just download it and enjoy. Easy, right?
CBZ is the ZIP-based counterpart to CBR, used for comic books. It contains a series of image files compressed in a ZIP archive. CBZ files are easy to create and widely supported by comic book reading apps.
RB is an old eBook format used by the Rocket eBook reader, one of the first dedicated eReaders. It includes text and formatting information but has fallen out of use and is now mainly encountered in digital archives or legacy collections.
Convert your .cbz files to .rb right in your browser — no downloads, no installs. Everything happens securely in the cloud.
We never store your files permanently. Only you can access them, and they’re automatically deleted from our servers within 2 hours.
Turn your CBZ files into RB in just a couple of clicks. No registration, no limits — and it’s 100% free.