ARW to RB Converter

Free online tool to convert ARW photos to RB

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Fully Online

Everything runs in your web browser — no software to download, no plugins to install. Just open the page, upload ARW, and get RB.

Any Device Works

Convert Sony ARW to RB from Windows, macOS, Linux, iOS, or Android — the browser-based tool works identically on every platform.

No Signup Needed

Start converting ARW to RB immediately — no registration, no email verification. Open the page and upload your Sony photo to begin.

How to convert ARW 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

ARW (Alpha RAW) is Sony's proprietary RAW image format used across the Alpha mirrorless and DSLR camera lineup, introduced in 2006 with the Alpha DSLR-A100. Built on a TIFF-like container structure, ARW stores the unprocessed readout from Sony's Exmor and Exmor R/RS CMOS sensors at 12 or 14 bits per pixel, retaining the complete dynamic range and color information before any in-camera processing is applied. The format includes detailed metadata — AF point data, lens distortion profiles, face detection results, and real-time tracking information from newer bodies — enabling RAW processors to replicate or refine the camera's processing decisions after the fact. ARW has evolved through several revisions: ARW 1.0 used simple per-row compression, ARW 2.0 introduced a more efficient delta encoding scheme, and ARW 4.0 added lossless compression support. One advantage is the exceptional latitude for exposure correction: Sony's sensor technology captures 14+ stops of dynamic range in many bodies, and the uncompressed ARW data preserves this range fully, allowing photographers to recover shadow detail or pull back highlights well beyond what JPEG permits. The format's integration with Sony's ecosystem is another practical strength — Creative Styles, Picture Profiles, and in-camera lens corrections are stored as metadata tags rather than baked into the data, giving photographers complete flexibility during post-processing. ARW files are supported by Adobe Lightroom, Capture One, DxO PhotoLab, and Sony's own Imaging Edge software suite.
Developer: Sony
Initial release: 2006
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 ARW to RB?

Converting your Sony ARW photo to RB embeds the image in an ebook-compatible format — useful for creating illustrated digital publications.

What programs open RB?

Open RB with Rocket eBook devices, Calibre, and RB-compatible reading software — it works across platforms.

Does the conversion preserve image quality?

The converter processes your Sony ARW sensor data carefully to produce the best possible RB output. Quality depends on the target format's capabilities.

How long does the conversion take?

Most ARW to RB conversions finish in seconds. Processing time depends on image resolution and server load, but results are typically fast.

Can I convert ARW from Google Drive?

Yes — import Sony ARW photos directly from Google Drive or Dropbox without downloading them to your device first. Cloud-to-cloud workflow.

Does this work with all Sony cameras?

The converter supports ARW from all Sony camera models — whether you shoot with an entry-level body or a professional flagship.