RawTherapee is a powerful, cross-platform raw photo processing application targeted at enthusiast and semi-professional photographers who want deep control over image development. It’s written primarily in C++ with a GTK+ front-end, providing a high-precision 32-bit floating-point processing engine along with multiple demosaicing algorithms and advanced color-management features. The program supports a very wide range of camera raw formats (via a patched version of dcraw) as well as non-raw formats such as JPEG, TIFF, and PNG. Users can work non-destructively: adjustments are previewed but stored separately (sidecar files) and only applied during export, which allows experimentation without altering originals. The interface includes a file browser, processing queue, editing pane with full-image previews, history stack, and batch export functionality.

Features

  • Support for numerous raw camera formats plus JPEG, TIFF and PNG
  • Multiple demosaicing algorithms (such as AMaZE, IGV, LMMSE, etc) giving users fine-control over interpolation
  • Full 32-bit floating-point internal processing pipeline for high-precision image development
  • Non-destructive editing with sidecar files and full history stack allowing snapshots and reversal
  • Advanced color management: ICC/DCP profiles, wide-gamut previews, soft-proofing, color-toning controls
  • Batch processing and export queue, enabling processing of multiple images while editing others

Project Samples

Project Activity

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Categories

Image Processing

License

GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

C++

Related Categories

C++ Image Processing Software

Registered

2025-11-24