Photo library & RAW · v0.7.1 · Alpha

LightCraft: a free, open-source Lightroom alternative

LightCraft is the photo library and RAW developer of the Crafting Apps: an open-source, clean-room take on Adobe Lightroom. It has its own pure-Rust RAW decoders (DNG, CR2/CR3, ARW, NEF, RAF including X-Trans), Light, Color and Effects panels, color grading wheels, masking, presets and a library with albums, ratings and flags.

The online version is the official web build from the v0.7.1 release (2026-10-12). It runs locally in your browser; a desktop browser with WebGPU or WebGL2 works best.

LightCraft developing Ansel Adams' The Tetons and the Snake River with the Light and Color panels open
Screenshot: LightCraft README, github.com/storytold/lightcraft (MIT/Apache-2.0).

What LightCraft can do

Develop panels

Exposure, Contrast, Highlights, Shadows, Whites, Blacks with edge-aware tone mapping, white balance, Texture, Clarity, Dehaze, and parametric and point tone curves.

Color grading

Shadow, midtone and highlight wheels for cinematic split-toning, plus an 8-band Color Mixer and B&W Mix.

Masking

Brush, linear and radial gradient masks that each carry their own exposure, color and detail settings.

Presets

Eighteen hand-built presets such as Golden Hour, Teal & Orange and Faded Matte, each with an Amount slider from 0 to 200%.

A real library

All Photos, Picks, By Date, nested albums and folders, ratings and flags. In the browser, the library persists in OPFS/IndexedDB.

Fast and private

A GPU pipeline that matches the CPU path within 1/255, and everything stays on your machine.

LightCraft vs Adobe Lightroom

Price
LightCraft: free, open source. Lightroom: paid Adobe product.
Platforms
Windows, macOS, Linux, FreeBSD and the browser.
Files
RAW: DNG, Canon CR2/CR3, Sony ARW, Nikon NEF, Fujifilm RAF (incl. X-Trans) and more; JPEG, PNG, TIFF, JPEG XL, PSD composites; HEIC/HEIF in desktop builds
Maturity
Alpha. The core develop pipeline, masking and library work. WebGPU in the browser and Safari/Firefox testing are still in progress upstream.
Account & privacy
No sign-in, no telemetry, works offline.

How to download and install LightCraft

  1. Open the official LightCraft GitHub releases or getartcraft.com/apps/lightcraft.
  2. Windows: run lightcraft-0.7.1-windows-x64.msi (or the portable zip; ARM64 and x86 builds exist).
  3. macOS: open lightcraft-0.7.1-macos-universal.dmg, which is signed and notarized for Apple Silicon and Intel.
  4. Linux: use the AppImage, or the .deb, .rpm or Flatpak for your distro.
  5. Optionally verify the file against SHA256SUMS.txt in the same release.

Prefer not to install? Use LightCraft online.

LightCraft FAQ

Which RAW formats does LightCraft support?

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Its own Rust decoders cover DNG, Canon CR2 and CR3, Sony ARW, Nikon NEF and Fujifilm RAF (including X-Trans), among others.

Where does the online version store my photos?

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In your own browser (OPFS/IndexedDB). Nothing is uploaded to artcraftsuite.org or anywhere else.

Is LightCraft free?

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Yes. LightCraft is free and open source under MIT OR Apache-2.0. There is no subscription, no account and no telemetry.

Can I use LightCraft online?

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Yes. LightCraft compiles to WebAssembly, and this site hosts the official v0.7.1 web build at artcraftsuite.org/app/lightcraft/. It runs entirely in your browser, and files you open are not uploaded.

Where can I download LightCraft safely?

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Only from getartcraft.com/apps/lightcraft or the Releases page of github.com/storytold/lightcraft. Avoid look-alike GitHub repos that offer a "local zip" or password-protected archive: they are not the official project.

Does LightCraft run on Windows, Mac and Linux?

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Yes. Releases include Windows installers and portable zips (x64, x86, ARM64), a universal macOS DMG, Linux AppImage, deb, rpm and Flatpak (x86_64 and aarch64), FreeBSD builds and the web version.

Who makes LightCraft?

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LightCraft is one of the ArtCraft Crafting Apps, developed in the open at github.com/storytold/lightcraft. It is a clean-room project and is not affiliated with Adobe.

Guides for LightCraft

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