RB to KWD Converter

Free online RB to KWD KWord conversion

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Ebook to KDE Document

Pull text from defunct RB ebooks and save it as KWD — a word processing format native to the KDE Calligra office suite.

Cloud Processing Power

The RB to KWD conversion runs on Convertio servers. No local software, no resource drain on your own machine.

Data Wiped Promptly

RB uploads are deleted after processing. KWD output files are automatically purged from servers within 24 hours.

How to convert RB to KWD

1

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

2

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

3

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

About formats

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
KWD is the native document format of KWord, the word processor component of KOffice (later renamed Calligra Suite), developed by the KDE community with its first stable release in KOffice 1.0 in 2000. KWord distinguished itself from other word processors through a frame-based layout model where text, images, and other content existed in independent frames that could be positioned freely on the page, similar to desktop publishing applications — a departure from the linear text-flow approach used by most word processors. KWD files store document content in a compressed XML format that describes the frame hierarchy, text content with formatting markup, paragraph styles, page dimensions, headers, footers, and embedded media. The format uses a ZIP container packaging the XML document alongside any referenced images and resources. One advantage was the flexible frame-based layout — users could position text and image frames independently on the page, enabling newsletter-style layouts and creative document designs without switching to a dedicated DTP application. The open XML structure is another benefit, making KWD files transparent and accessible to automated processing. KWord was included in several Linux distributions as part of the KDE desktop environment during the 2000s. The project was eventually discontinued in favor of Calligra Words, which adopted the ODF standard. KWD files can be opened with legacy KOffice installations or converted through document conversion tools.
Developer: KDE
Initial release: 2000

Frequently Asked Questions

Why convert RB to KWD?

RB is a dead 1998 ebook format. KWD produces KWord-compatible documents — editable in KDE Calligra Suite and similar applications.

What opens KWD files?

Calligra Words (formerly KWord), LibreOffice Writer (with import support), and some other Linux word processors handle KWD files.

Is KWD still used?

KWD is a legacy KDE format, now succeeded by Calligra ODT. It remains openable by Calligra Suite and LibreOffice on Linux systems.

Does the text transfer cleanly?

Convertio extracts text from the RB ebook and formats it as a clean KWD document — basic text structure is preserved.

Is this a paid service?

No — RB to KWD conversion is free on Convertio. Premium plans offer batch processing and increased capacity.