To convert RB to PDF, select or drop your .rb file above, check that PDF is chosen as the output, and click Convert. This conversion runs on our server, and your files are deleted 72 hours later.
What is an RB file?
RB – Rocket e-book. RB is the e-book format of the Rocket eBook, one of the first e-readers (1998).
RB Converter →What is a PDF file?
PDF – PDF document. PDF is the document format that looks the same on every device: it fixes where each letter and picture goes on a page. It is made for reading and printing, not for editing.
PDF Converter →How to convert RB to PDF
- Click Select File, or drop your .rb files anywhere on this page. You can add several at once.
- Check that PDF is chosen as the output format. On this page it is picked for you.
- Click Convert. When a file has to go to our server, the button says Upload and convert instead.
- Click Download next to each file when it's done.
RB vs PDF: how they compare
| RB | ||
|---|---|---|
| Layout | Flowing text | Fixed pages |
| Editable | No | Hard |
| Created by | NuvoMedia, 1998 | Adobe, 1993 |
| Best for | Rocket eBook readers | Sharing and printing documents |
Good to know
- The RB e-book is converted by calibre. Copy-protected (DRM) e-books cannot be converted: ConvertKitty does not remove DRM, so use books you have bought without it or that are free of it.
- The e-book is typeset on pages of a standard size. The text flows to fit them, so page breaks are not those of a printed book.
Frequently asked questions
Is converting RB to PDF free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my RB files uploaded anywhere?
This conversion runs on our server, because reading an RB file needs calibre, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.
How large can the RB file be?
Up to 1 GB per file. This conversion runs on our server, which accepts files up to that size.
Will the PDF look the same as the RB?
The text, chapters and pictures are kept. The look can differ: PDF readers use their own fonts and page sizes, so page breaks move.
Can I convert several RB files at once?
Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.
How long does converting RB to PDF take?
In our tests a 4 MB novel of 400 chapters took about two minutes to become a PDF file of 2,000 pages. Most books are far smaller and take a few seconds.
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