Happy Photon

Photo editing,
simplified.

Simple enough for your first camera. Serious enough for a working pro.

See release availability See the pro pipeline
Stable 0.2.5 Windows, macOS, Linux
Lightroom
compatible Ratings · Flags · Labels · Crops
Happy Photon Browse showing wildlife thumbnails with flags, star ratings, color labels, the filter bar, histogram, and capture metadata
Originals stay untouched Catalog and edits stay local No account or subscription No telemetry or advertising

THE HAPPY PHOTON WORKFLOW

A complete workflow.
Just three decisions.

Move from a full card to finished photographs without turning the process into a second job.

  1. 01

    Choose the keepers

    Browse in place. Compare candidates side by side and use flags, ratings, filters, and burst grouping to narrow a shoot quickly.

    COMPARE · PICK · RATE
  2. 02

    Develop the photographs

    Crop, straighten, correct perspective, and shape light, color, tone, and detail with non-destructive controls. Use local masks to refine light and color in selected parts of the frame.

    COMPOSE · LIGHT · COLOR
  3. 03

    Export what you need

    Proof the result, then create JPEG, PNG, WebP, or 16-bit TIFF copies in the sizes you need—without changing the originals.

    SELECT · PROOF · EXPORT

Read the complete workflow

NEW IN HAPPY PHOTON 0.2.5

Shape the light. Right where it matters.

Guide the eye with local masks

Draw a linear gradient across a sky or place a radial mask around a subject. Feather the edges for a smooth transition, and choose the inside or outside of a radial mask.

Adjust local light and color

Change Exposure, Temperature, Tint, and Saturation within each mask. Brighten a face, cool a background, or soften a patch of strong color without changing the whole frame.

Place each adjustment precisely

Drag mask controls on the photograph, enter numeric geometry, or start at the center of the view. Crop and Locals tools sit beneath the histogram.

Another way to download for Windows

The Microsoft Store remains recommended. A Windows x64 ZIP on GitHub Releases provides a direct-download fallback with manual updates.

Local adjustments stay non-destructive, work with undo and redo, and carry through to your exported photographs.

Happy Photon Develop in Middle Gray with Assess mode surrounding a bear photograph with neutral gray and a white reference border

FOR BEGINNERS AND PROS ALIKE

Everything the photograph needs. Nothing it doesn’t.

Whether you are opening your first camera folder or graduating from a heavyweight workflow, the same focused controls carry a shoot from card to finished file—and a serious image engine sits underneath when you want to push a photograph.

  • Browse in placeOpen JPEG and RAW shoots without an import step.
  • Make the cutCompare up to four photos side by side, pick, reject, rate, add color labels, filter, group bursts, and treat a RAW + JPEG pair as one capture.
  • Shape the imageEdit composition, perspective, white balance, light, color, tone, and detail, with lens corrections for RAW. Use linear and radial masks for local exposure, warmth, tint, and saturation.
  • Keep a series coherentReuse looks with presets and copy/paste, and keep up to eight versions of one file.
  • Export safelyProof the output in the Export workspace and create new files without overwriting loaded originals.
See what makes pros happy: the editing pipeline
Happy Photon Develop showing a bear photograph with presets, histogram, tone curve, and focused adjustment controls

LOCAL-FIRST BY DESIGN

Your photographs
remain yours.

Happy Photon works with photographs where they already live. Ratings, flags, and edits are local catalog instructions—not changes written into your images.

Export creates new files and refuses any target that would collide with a loaded original.

  • No mandatory import

    Open a folder and work directly with the shoot.

  • No cloud library

    Your catalog and edit instructions stay on your computer.

  • No business in your business

    No account, subscription, product telemetry, ads, or site tracking.

OPEN SOURCE, IN THE OPEN

Built for the workflow.
Open to inspection.

Happy Photon is licensed GPL-3.0-or-later. Read the source, report what feels rough, or help shape the next release.

View sourceExplore the application and site code Report an issueShare a reproducible problem Build from sourceSet up a local development build ContributeSee project contribution guidance

PLATFORM GUIDES

A clear start,
on your desktop.

Check installation, compatibility, and the complete RAW and JPEG workflow for your operating system.

WINDOWS 10 1809+ · X64

Photo editing on Windows

Install from the Microsoft Store, open a camera folder, and export finished copies.

Read the Windows guide

APPIMAGE · X64

Photo editing on Linux

Run the AppImage and use a local, open-source folder-to-export workflow.

Read the Linux guide

MACOS 14+ · APPLE SILICON

Photo editing on macOS

Install the signed and notarized app on an Apple Silicon Mac and begin with a local folder.

Read the macOS guide

Already assessed a shoot in Lightroom Classic? Bring over ratings, flags, and color labels

READY FOR LAUNCH

Your next shoot,
without the overhead.

Happy Photon is available now from the Microsoft Store, with a signed macOS release and a Linux AppImage available from GitHub.

See release availability Follow releases