dcraw
dcraw is a free utility for decoding camera RAW photos, displaying metadata, and extracting thumbnails.
What dcraw is
dcraw is a free utility for decoding camera RAW photos, displaying metadata, and extracting thumbnails. The maker’s page says it supports 731 cameras at last count, with documented formats including CRW, CR2, MRW, NEF, and RAF. Its image processing offers four interpolation methods: bilinear, VNG, PPG, and AHD. Output color spaces include sRGB, Adobe RGB, ProPhoto RGB, XYZ, and ACES. By default, dcraw writes PGM, PPM, or PAM files; the -T option writes TIFF with metadata. The maker provides C source and Linux build instructions, including a gcc command, and says a self-contained DCRAW.EXE can be built for DOS or Windows from a source file in the directory. A basic plugin can load RAW files into GIMP. The manual lists gphoto2 and Netpbm utilities among related command-line tools. The maker describes it as software for processing camera images after downloading them to a Linux PC. dcraw cannot decode JPEG files.
Good
- Free for all uses.
- Decodes RAW files from listed camera formats.
- Offers four interpolation methods.
- Can output TIFF with metadata.
Watch out
- Cannot decode JPEG files.
- Maker describes image processing on a Linux PC.
- Windows executable is built from a source file.
Who it suits
dcraw suits users processing supported camera RAW files on Linux or Windows, especially those comfortable with command-line tools or building from source. It may also be useful to GIMP users seeking a basic RAW-loading plugin.
Verdict
dcraw focuses on RAW decoding, metadata, thumbnails, and image output rather than JPEG handling. Check that your camera format and preferred output are supported before using it.
Plans and prices
From dcraw's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Free for all uses |
The facts
Each one read from dcraw's own pages, with the date it was checked.
What it does
- Audience
- The maker describes the software as processing camera images after they have been downloaded to a Linux PC.checked 8 Oct 2026
- Build
- The maker provides C source and Linux build instructions, including a command that compiles with gcc.checked 8 Oct 2026
- Camera support
- The maker’s page says dcraw supports 731 cameras at last count.checked 8 Oct 2026
- Color options
- It supports output color spaces including sRGB, Adobe RGB, ProPhoto RGB, XYZ, and ACES.checked 8 Oct 2026
- Image processing
- It offers four interpolation methods: bilinear, VNG, PPG, and AHD.checked 8 Oct 2026
- Integration
- The maker provides a basic plugin for loading raw files into GIMP.checked 8 Oct 2026
- Limit
- dcraw cannot decode JPEG files.checked 8 Oct 2026
- Other tools
- The manual lists gphoto2 and Netpbm utilities among related command-line tools.checked 8 Oct 2026
- Output formats
- By default it writes PGM, PPM, or PAM; the -T option writes TIFF with metadata.checked 8 Oct 2026
- Purpose
- dcraw decodes raw photos, displays metadata, and extracts thumbnails.checked 8 Oct 2026
- Support
- The maker says users can contact him by email at dechifro.org using the username “dechifro”.checked 8 Oct 2026
Where it runs
- Windows
- The maker says a self-contained DCRAW.EXE can be built for DOS/Windows from a source file in the directory.checked 8 Oct 2026
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