dcraw
What it is
dcraw is a free utility for decoding camera-specific RAW photos, displaying metadata, and extracting thumbnails. The maker says it supports 731 cameras at last count, with documented formats including CRW, CR2, MRW, NEF, and RAF. It offers bilinear, VNG, PPG, and AHD interpolation methods, along with output color spaces such as sRGB, Adobe RGB, ProPhoto RGB, XYZ, and ACES. By default, it writes PGM, PPM, or PAM files; the -T option produces TIFF with metadata. The maker provides C source and Linux build instructions, including a gcc compile 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 is available for loading RAW files into GIMP. The manual lists gphoto2 and Netpbm utilities among related command-line tools. The maker describes the software as a way to process camera images after they have been downloaded to a Linux PC. dcraw does not decode JPEG files.
For and against
For
- Free for all uses.
- Supports camera-specific RAW formats including CR2 and NEF.
- Offers four interpolation methods.
- Can output TIFF with metadata.
Against
- Does not decode JPEG files.
- The maker describes processing images after download to a Linux PC.
The verdict
dcraw focuses on decoding RAW photos, metadata display, and thumbnail extraction, with several processing and output options. It is not suitable for JPEG decoding.
Who it suits
dcraw suits users who need to decode supported camera RAW files on Linux or Windows and choose among its listed output formats and color spaces.
Plans and prices
Free
Free for all uses
Read 8 Oct 2026 · dechifro.org
On the record
- Audience
- The maker describes the software as processing camera images after they have been downloaded to a Linux PC.dechifro.org · read 8 Oct 2026
- Build
- The maker provides C source and Linux build instructions, including a command that compiles with gcc.dechifro.org · read 8 Oct 2026
- Camera support
- The maker’s page says dcraw supports 731 cameras at last count.dechifro.org · read 8 Oct 2026
- Color options
- It supports output color spaces including sRGB, Adobe RGB, ProPhoto RGB, XYZ, and ACES.dechifro.org · read 8 Oct 2026
- Image processing
- It offers four interpolation methods: bilinear, VNG, PPG, and AHD.dechifro.org · read 8 Oct 2026
- Integration
- The maker provides a basic plugin for loading raw files into GIMP.dechifro.org · read 8 Oct 2026
- Limit
- dcraw cannot decode JPEG files.dechifro.org · read 8 Oct 2026
- Other tools
- The manual lists gphoto2 and Netpbm utilities among related command-line tools.dechifro.org · read 8 Oct 2026
- Output formats
- By default it writes PGM, PPM, or PAM; the -T option writes TIFF with metadata.dechifro.org · read 8 Oct 2026
- Purpose
- dcraw decodes raw photos, displays metadata, and extracts thumbnails.dechifro.org · read 8 Oct 2026
- Support
- The maker says users can contact him by email at dechifro.org using the username “dechifro”.dechifro.org · read 8 Oct 2026
- Windows
- The maker says a self-contained DCRAW.EXE can be built for DOS/Windows from a source file in the directory.dechifro.org · read 8 Oct 2026
