RTF to RB Converter

RTF to RB conversion — RocketBook eBooks online

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Fast Conversion

RB is a lightweight format — conversion from RTF finishes almost instantly on cloud infrastructure.

Browser-Based

No downloads or installs. Open Convertio in any web browser to convert RTF to RB from any device.

Remote Processing

All conversion work happens on servers — your device stays free and the results arrive in seconds.

How to convert RTF to RB

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose rb or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your rb file right afterwards

About formats

RTF (Rich Text Format) is a document interchange format developed by Microsoft and first published in 1987 with Word 3.0. The format encodes document content and formatting as plain ASCII text using control words (backslash-prefixed commands) and groups (curly-brace-delimited sections) that describe fonts, character formatting, paragraph layout, tables, images, and page setup. Because RTF is fundamentally a text format with no binary components, documents pass cleanly through any text channel — email systems, clipboard operations, and cross-platform transfers — without corruption. Microsoft designed RTF explicitly as a cross-application and cross-platform exchange format, and it achieved broad adoption: virtually every word processor, text editor, and document tool on every operating system has supported RTF reading and writing for decades. One advantage is exceptional cross-platform compatibility — an RTF document created on any application renders with consistent formatting on any other, making it the most reliable format for text exchange between incompatible systems. The text-based structure provides another benefit: RTF files resist corruption, are trivially generated by programs (requiring only string concatenation), and can be debugged by reading the raw markup in a text editor. While RTF lacks modern features like tracked changes and advanced layout controls, and Microsoft declared the specification frozen at version 1.9.1 in 2008, the format persists as a dependable interchange option where DOCX compatibility cannot be assumed.
Developer: Microsoft
Initial release: 1987
RB is the native ebook format of the Rocket eBook, one of the first commercially available dedicated e-reading devices, developed by NuvoMedia and released in October 1998. Founded by Martin Eberhard and Marc Tarpenning — who later co-founded Tesla Motors — NuvoMedia designed the Rocket eBook as a handheld device with a reflective LCD screen, capable of storing approximately ten books in its internal memory. The RB format packages HTML-based content along with embedded images, metadata, and a table of contents into a single binary container optimized for the device's limited hardware. Content was purchased and downloaded through NuvoMedia's RocketLibrarian desktop software. A notable advantage of the format was its early support for bookmarking, annotation, dictionary lookups, and adjustable font sizing — features now standard on modern e-readers but revolutionary in the late 1990s. The Rocket eBook demonstrated viable commercial demand for dedicated reading devices, paving the way for subsequent platforms from Sony, Amazon, and others. NuvoMedia was acquired by Gemstar-TV Guide International in 2000, which discontinued the device line in 2003. While RB files are largely a historical curiosity today, they can be converted to modern formats using ebook management tools, and the format remains significant as a pioneering chapter in the evolution of digital reading.
Developer: NuvoMedia
Initial release: 1998

Frequently Asked Questions

Why convert RTF to RB?

RB is the RocketBook eBook format — converting from RTF creates lightweight eBooks for compatible reading applications.

What reads RB files?

RocketBook-compatible readers and Calibre can open RB files. Some lightweight eBook apps also support the format.

Does RTF content transfer to RB?

Text and basic paragraph structure transfer from RTF to RB. The format is minimal, so advanced styling simplifies.

Is this converter free to use?

Free for everyday conversions. Premium tiers add higher file limits and priority server access.

How quick is RTF to RB conversion?

Nearly instant. Cloud servers handle the lightweight RB format creation in seconds for typical documents.

Can I convert several RTF files to RB?

Yes — batch upload your RTF documents and convert them all to RB eBooks in parallel.

RTF to RB Quality Rating

4.6 (7 votes)
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