How do I open a Rocket eBook RB file?

Upload your .rb file here and it opens in the browser. The Rocket eBook hardware has been out of production for two decades, so there is no current native reader for the format.

RB is the Rocket eBook format from NuvoMedia, used by one of the first commercial e-readers in the late 1990s. Later REB devices used it too.

Can ReadLoudly narrate an RB ebook?

Yes. The text is extracted from the RB container and read aloud with AI voices, with the same speed, voice and bookmarking controls as any other format here.

Should I convert my RB files to EPUB for long-term storage?

It is a reasonable idea for archival, since RB is a dead format. For reading and listening right now, though, no conversion is needed — upload the RB file directly.

Is the RB reader free to use?

Yes. Reading and listening to RB files is free, with no account required to start and no watermark on anything. Paid plans — Core at $5/month, Plus at $10/month, Pro at $19/month — raise the upload size limit, unlock all 1200+ AI voices, add MP3 downloads and offline listening, and remove ads.

Does ReadLoudly support RB as well as other formats?

Yes — RB is fully supported on this page, and it is one of 24 formats ReadLoudly reads aloud: documents (PDF, DOCX, ODT, RTF), ebooks (EPUB, MOBI, AZW, FB2, CHM, LRF, LIT, PDB, RB), text and web files (TXT, HTML), comics (CBR, CBZ), and images (via OCR) (JPG, PNG, GIF, BMP, WEBP, TIFF, SVG). Upload an RB file here and it opens straight away; any other format on that list has its own reader page.

Can I open RB files on my phone or tablet?

Yes. This reader runs in the mobile browser on iOS and Android — nothing to install — so you can open an RB file straight from your phone's Files app, an email attachment or a cloud drive. Playback continues in the background, and your position syncs to any other device you sign in on.

What happens to my RB file after I upload it?

It is parsed to extract its text, then removed from the processing servers. ReadLoudly does not train models on your files, does not share them with third parties, and does not make them visible to anyone else. Signed-in users can choose to keep an RB file in their own private library; a guest upload is discarded when the session ends.

What exactly is an RB file?

RB is the Rocket eBook format from one of the first commercial e-readers. ReadLoudly opens it directly in the browser, so you do not need the original software that created it.

What if my file is not an RB?

Every format gets its own reader page rather than being funnelled into one generic uploader, so nothing loses its format-specific handling. Nearest neighbours to RB among ReadLoudly's ebooks: EPUB, MOBI, AZW, FB2. The Tools page lists all of them.