About

Welcome to the home page of ART, a free, open-source, cross-platform raw image processing program. ART is a derivative of the popular RawTherapee, trading a bit of customization and control over various processing parameters for a simpler and (hopefully) easier to use interface, while still maintaining the power and quality of RawTherapee.

Downloads

Source code and binaries of the latest stable version are available at: https://bitbucket.org/agriggio/art/downloads/

• Starting from version 1.8.2, the release files are digitally signed with PGP. The signatures can be verified with following key stored in the OpenPGP keyserver: https://keys.openpgp.org/vks/v1/by-fingerprint/942FCFB1CBE1E38928A1A6BEA94D951156835A5D

Other binaries (nightly builds and/or optimized builds for specific architectures):

• Optimized Windows binaries: https://drive.google.com/drive/folders/1PiiTzfY1uSD8nV3bzgKDAR4o2aVZUJMS
• Packages for openSUSE:
  • Tumbleweed: the package is part of the main repo-oss repository, so it can be easily installed with sudo zypper in ART
  • Leap 15.x: the package resides in the graphics OBS repository, so to install it a few extra steps are needed. First you need to install opi, the OBS package manager, with sudo zypper in opi, and then you can install ART sudo opi ART. Please report any installation/runtime bug here.
• Packages for ArchLinux and derivates (via AUR): https://clttr.info/art-aur
• Experimental Mac OSX builds (please test!): https://art.r42.us/

Source code of the current development version is available at: https://bitbucket.org/agriggio/art/src

Features

At a first glance, ART appears very similar to RawTherapee. Compared to the latter, ART differs in the following main aspects:

• The user interface and the underlying processing pipeline have been significantly restructured, with many tools removed, some new tools added, and several tools rewritten and/or refactored.

• Various new tools for performing local edits have been added, with support for various masking modes (both drawn and parametric).

• A new automatic perspective correction tool (taken from darktable) has been added.

• Better metadata handling (thanks to the exiv2 and exiftool libraries), with (optional) support for reading and writing XMP sidecar files.

• Support for using LibRaw for decoding raw files.

• Support for ACES CLF LUTs using OpenColorIO.

• Support for CTL scripts using the ACES CTL interpreter.

• Star ratings and colour labels can be loaded and stored from/to XMP sidecar files.

• Snapshots are now permanent, saved in the processing profiles.

• Processing profiles have .arp extension instead of .pp3, to avoid conflicts with RawTherapee.

• The "inspector mode" tool of the file browser has been significantly enhanced.

Status

The current version is 1.21.3. It was released on April 10th 2024. Change log.

Contact

ART discussion group.

Documentation

"Official" documentation:

• ART FAQ -- read this first please!

• ART quick start guide

• ART reference manual

• Notes about the processing pipeline

• Keyboard shortcuts

• Local editing with layers and masks

• Area masks: creating polygonal shapes

• Working with LUTs

• Session mode

• User commands

• Adding support for custom (non-raw) image formats

• Adding watermarks on export

• Generating HDR output images

Other documentation sources ("unofficial", not maintained by the project):

• An introduction to ART (external blog post)

• Troubleshooting Canon CR3 support (external blog post)

• Troubleshooting lens corrections support: Windows, Linux AppImage

• ART French community website, with links, tutorials, and forum for French-speaking users.

Video demos

• Mask creation

• Automatic perspective correction

• Dynamic range manipulation

• Metadata synchronization (with digiKam)

• ART video tutorials (external, in French)

Compilation instructions

• Building on Ubuntu-based Linux distributions

• For other systems, see RawPedia. The only difference between compiling RawTherapee and ART is that ART depends also on exiv2 and (optionally, but highly recommended) LibRaw and OpenColorIO.

License

ART is released under the GNU General Public License version 3.