CRW to SNB Converter

Convert CRW to SNB eBook format — free online tool

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Secure Handling

Security is built into every conversion. Uploaded CRW images are deleted instantly after processing, and SNB results are cleaned up within 24 hours.

Any Device, Any OS

The converter runs in any modern web browser. Use it on your desktop, laptop, tablet, or smartphone — no platform restrictions.

Quick Conversion

No long waits. The converter processes CRW images quickly, delivering SNB results in seconds — even during peak usage periods.

How to convert CRW to SNB

1

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

2

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

3

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

About formats

CRW is Canon's first-generation RAW image format, based on the Camera Image File Format (CIFF) specification developed jointly by Canon, Kodak, and other imaging companies in the late 1990s. Used by Canon's consumer and prosumer cameras from approximately 1998 through the early 2000s — including the PowerShot G-series, EOS D30, EOS D60, and EOS 10D — CRW files store the unprocessed 12-bit sensor readout in a heap-based container structure that differs fundamentally from the TIFF-derived approach used by most other camera manufacturers. The CIFF container organizes data into a hierarchical directory of heap entries, each identified by type and tag, containing the raw image data, JPEG thumbnail, EXIF information, and Canon's proprietary metadata including White Balance tables and Picture Style parameters. CRW was eventually replaced by the CR2 format starting with the EOS-1D Mark II in 2004, as Canon moved to a TIFF-based container that aligned more closely with industry conventions and supported higher bit depths. One advantage of CRW files is historical completeness: they preserve the full original sensor data from an important transitional period in digital photography, and the 12-bit captures from cameras like the EOS D30 still produce excellent results when reprocessed with modern RAW converters. Broad legacy support is another strength — despite its age, CRW remains readable by Adobe Lightroom, Photoshop, RawTherapee, and other modern converters, ensuring these early digital negatives remain accessible.
Developer: Canon
Initial release: 1998
SNB is a proprietary ebook format developed by Shanghai Nutshell Electronics, a subsidiary of Shanda Interactive Entertainment, for the Bambook e-reader launched in August 2010. The format is structurally based on EPUB principles, packaging HTML content, CSS styling, images, and metadata within a compressed archive, but uses a proprietary container that restricts native playback to Bambook devices and associated software. Shanda designed the Bambook and its SNB ecosystem as an integrated reading platform tied to the Cloudary literature portal (later rebranded as China Literature), one of China's largest online publishing networks hosting millions of web novels and serialized fiction. The format supported reflowable text, chapter navigation, bookmarks, and basic typographic controls suited to Chinese-language content display. One advantage was tight integration with Shanda's massive content catalog, providing readers instant access to an enormous library of Chinese-language literature directly through the device. The Bambook was initially offered at a heavily subsidized price point, using the content ecosystem to drive revenue — a model that preceded similar strategies by other e-reader manufacturers. While the Bambook hardware line was eventually discontinued as the Chinese market shifted toward tablet-based reading apps, SNB files from that era can be converted to standard formats using tools like Calibre with appropriate plugins. The format represents an interesting case study in platform-specific ebook ecosystems within the Chinese digital publishing landscape.
Initial release: August 2010

Frequently Asked Questions

Why should I convert CRW to SNB?

Converting CRW to SNB lets you include Canon photos in eBook projects — the image is embedded in a format compatible with e-readers and reading apps.

What software can open SNB?

SNB works with Shanda Bambook reader, Calibre, and S-Note compatible devices.

Does converting CRW to SNB affect quality?

The conversion preserves visual quality as closely as the target format allows. SNB output maintains the essential detail from your original CRW image.

Is CRW to SNB conversion free?

Yes — basic CRW to SNB conversion is free. If you need to process larger batches or bigger files, premium options are available.

Can I convert multiple CRW files to SNB at once?

Absolutely — Convertio lets you upload multiple CRW files simultaneously. Each is converted to SNB and available for individual download.

How long are converted files stored?

Files are stored temporarily — your SNB result is available for 24 hours after conversion, then automatically deleted for security.