CRW Converter
Convert files to and from CRW online for free. Fast, secure, and high-quality file conversion with no sign-up or software required.
Maximum file size is 1GB
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What is a CRW file?
The CRW (Canon RaW) format is a legacy raw image container used by early Canon digital cameras, including the PowerShot G1 and EOS D30, prior to the adoption of CR2. It is structured according to the Camera Image File Format (CIFF) standards, storing uncompressed CCD sensor data alongside a separate THM (Thumbnail) file that contains EXIF metadata and a JPEG preview. CRW files lack the internal TIFF structure found in modern raw formats, relying instead on a heap-based storage mechanism with specific data offsets.
How to open a CRW file
Due to its obsolescence, native operating system support for CRW is limited on modern Windows 11 and macOS environments. Users generally require specialized image viewers or legacy conversion tools. Adobe Photoshop (via older Camera Raw plugins), IrfanView (with plugins), and FastStone Image Viewer can render CRW data. For open-source workflows, Darktable and LibRaw-based applications provide decoding capabilities for these legacy sensor dumps.
CRW Technical Info
- Full Name
- Canon Raw (Legacy)
- Developed By
- Canon Inc.
- Initial Release
- 1997
- MIME Type
- image/x-canon-crw
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