BMP to RB Converter

Quick BMP to RB conversion — free online tool

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Pixel Perfect

BMP stores raw pixel data — Convertio preserves that precision when converting to RB, maintaining image fidelity throughout the process.

Privacy Protection

Your uploaded BMP files are removed right after conversion, and RB results are deleted from servers within 24 hours — your data stays private.

Straightforward Steps

No learning curve — upload your BMP file, pick RB as output, and download. The entire process is designed for simplicity.

How to convert BMP 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

BMP (Bitmap) is a raster image file format developed by Microsoft for the Windows operating system, introduced with Windows 3.0 in 1990. The format stores pixel data in a straightforward structure: a file header specifying dimensions, color depth, and compression method, followed by an optional color palette and then the raw pixel array. BMP supports color depths from 1-bit monochrome through 4-bit and 8-bit indexed color to 16-bit, 24-bit true color, and 32-bit with alpha channel. Most BMP files store pixels uncompressed (BI_RGB), though optional RLE compression is available for 4-bit and 8-bit modes. Pixels are arranged in bottom-up row order by default, with each row padded to a 4-byte boundary. One advantage is absolute simplicity — the format has no complex encoding, filtering, or compression layers, making BMP files trivial to read and write programmatically in any language. This simplicity also means BMP images render with zero decoding overhead, useful in scenarios where decompression latency matters. The format's deep Windows integration is another strength: BMP is the native bitmap format for Windows GDI, clipboard operations, and device-independent bitmap (DIB) handling, ensuring first-class support across the entire Windows ecosystem. While BMP's lack of compression produces large files unsuitable for web use or storage-constrained environments, it remains widely used as an intermediate format in image processing, as a clipboard exchange format, and in embedded systems where decoding simplicity outweighs file size.
Developer: Microsoft
Initial release: 1990
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 BMP to RB?

Rocket eBook format wraps your BMP for early e-reader hardware — a legacy conversion for distributing images on Rocket eBook devices.

How do I open RB files?

RB files work with Calibre, legacy Rocket eBook devices. Check your operating system for built-in viewer support as well.

Can I convert multiple BMP files at once?

Yes — Convertio supports batch uploads. Queue several BMP files and convert them all to RB format in a single session without repeating steps.

What happens to my uploaded files?

Your BMP files are automatically deleted right after conversion. The resulting RB files remain available for download for 24 hours, then they are permanently removed.

Is BMP to RB conversion free?

Basic conversions are free on Convertio. Premium plans offer faster processing, larger file sizes, and higher daily conversion limits for heavier workloads.

Does this work on mobile devices?

Yes — the BMP to RB converter works in any mobile browser on iOS and Android. No app installation is needed — just open convertio.tools and upload your file.

BMP to RB Quality Rating

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