Illuminate Your Photos.
A fast, private photo library and non-destructive raw editor that runs entirely in your browser.
Nothing to install, no account. Your photos never leave your device.
Everything a photographer needs
Raw development
White balance, exposure, tone curve, color mixer, color grading and detail — on raws from most cameras.
Masking
Brush, linear and radial gradients, color and luminance ranges, and optional AI object masks.
Library
Ratings, flags, color labels, keywords, albums and smart albums, with fast search and filters.
Non-destructive
Your originals are never changed. Undo anything, keep versions, compare before and after.
Full quality, fast
Photos render at full resolution on parallel workers, tuned to your device's memory.
Export
JPEG, PNG, TIFF and more, with sizing, sharpening, metadata and watermarks.
Three steps
- 1Open Lumen and import a folder of photos.
- 2Pick a photo and adjust it — Auto is a good start.
- 3Export the result, or keep editing later: it's all saved.
Private by design
The whole engine runs on your computer as WebAssembly. Lumen keeps your library in the browser's own storage, uploads nothing and needs no cloud account. Back it up any time with File → Back Up Library….
Tip: install Lumen from your browser's menu (Install app) and it opens in its own window, even offline.