Lumen - Photo Viewer
Fast, beautiful photo browsing
Only for Mac
Free · In‑App Purchases
Mac
New in 1.8: a full photo editor. RAW develop, masks, healing, AI noise reduction, HDR and panoramas. All on your Mac, $9.99 once.
Lumen is a fast photo viewer and a full photo editor for people who keep photos in folders. Open any folder and browse instantly: no importing, no catalogue, no library lock-in. Your folders stay exactly as they are, and your originals are never touched.
EVERYTHING, FREE FOR 7 DAYS:
EDIT LIKE A PRO
- RAW develop on Apple's own decoder, for every RAW format macOS reads (CR3, NEF, ARW, RAF, ORF, RW2, DNG and more): exposure, white balance, highlight recovery, noise and detail
- Light, white balance, curves, HSL, point colour, colour grading, texture, clarity, dehaze, grain, vignette and glow
- Masks: subject, people, background, sky or depth in one click, or click any object or drag a box around it. Add gradients, a brush, and brightness or colour ranges
- Portrait retouching, heal and clone, and Find dust for sensor spots
- Crop to any shape, auto upright, lens corrections
- AI noise reduction for high-ISO photos, on your Mac
- Merge HDR brackets, panoramas and focus stacks into 16-bit photos ready to edit
- Eleven film looks, your own looks and .cube colour tables
- Edits live in XMP sidecars beside each photo, with undo, history and versions. Copy an edit and paste it onto many photos
- Export to JPEG, HEIC, AVIF, JPEG XL, WebP, PNG or TIFF, in sRGB, Display P3, Adobe RGB or ProPhoto, 16-bit or HDR, with a watermark, and enlarge 2x or 4x with AI (macOS 26 or later)
- Soft proofing, printing and tethered shooting from a USB camera
FIND AND SORT
- Smart search: describe a photo in your own words, like "people on a beach", and Lumen finds it across all your folders. It runs on an on-device model (a one-time 656 MB download) and also finds words inside photos, places and dates. Right-click any photo for Find Similar
- Cull fast: pick, reject, star and colour-label with one key (P, X, 1-5), filter to your picks, then move the rejects to the Trash. Marks are XMP sidecars that other photo apps read, and RAW+JPEG pairs share them
- Compare two photos side by side, zoomed together
- Clean Up finds copies, the weaker shots of each burst, blurry photos and screenshots, and Best Shot picks the keeper of every burst. Nothing goes until you choose
- Places shows a folder as a trip on a map; Highlights picks the best 20, 30 or 50 photos on a day-by-day timeline; On This Day brings back earlier years
BROWSE
- A folder tree, whole folders of folders in one grid, and four layouts: tiles, squares, whole photos and a sortable list
- Drag across photos to select many, then move, copy, rotate, rate, share or trash them together
- Opens JPEG, PNG, HEIC, WebP, AVIF, JPEG XL, GIF, TIFF, PSD and RAW
- Edge-to-edge fullscreen, zoom to pixels, Live Text, animated GIFs
- Batch convert, resize and rename, with optional EXIF and location stripping
- Cinematic slideshow, and Present mode for AirPlay, HDMI and Sidecar displays
- EXIF panel with histogram and location map; changes made in Finder appear instantly
FREE FOR 7 DAYS, THEN PAY ONCE:
Try every feature free for 7 days, with as many folders as you like. Nothing is charged, and the trial never turns into a payment. After that, Lumen Pro is a one-time purchase: pay once, keep it forever, all future updates included. No subscription. Photos opened from Finder always show, with or without Pro.
No account. Everything runs on your Mac and nothing is uploaded. Lumen collects no data of any kind.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Lumen 1.8 turns quick edits into a full photo editor. Still $9.99 once, no subscription.
EDIT LIKE A PRO
• RAW develop on Apple's own decoder: exposure, white balance, highlight recovery, noise, detail and more. On macOS 27, Apple's AI RAW decoder.
• Light, white balance, HSL, colour grading, curves, texture, clarity, dehaze, grain, vignette and glow.
• Point colour: click a colour in the photo and change only that colour.
• Eleven film looks, your own looks, and .cube colour tables.
• Your original is never touched. Edits are saved beside each photo, with undo, history and versions.
MASKS AND RETOUCHING
• Masks for the subject, people, background, sky or depth, or click any object or drag a box around it. Add gradients, a brush, brightness and colour ranges.
• Portrait retouching: smoother skin, brighter eyes, whiter teeth.
• Heal and clone, and Find dust to heal sensor dust in one click.
CROP AND FIX
• Crop to any shape. Auto upright levels horizons and straightens buildings.
• Lens corrections for distortion, vignetting and colour fringes.
AI, ON YOUR MAC
• AI noise reduction for high-ISO photos.
• Enlarge photos 2× or 4× with AI when you export (macOS 26 or later).
MERGE
• HDR from a bracket, panoramas from a sweep, and focus stacks, saved as 16-bit photos ready to edit.
EXPORT AND MORE
• Export to JPEG, HEIC, AVIF, JPEG XL, WebP, PNG or TIFF, in sRGB, Display P3, Adobe RGB or ProPhoto, 16-bit or HDR, with a text or logo watermark.
• Copy an edit and paste it onto many photos. Convert a selection, each with its own edit.
• Soft proofing and printing. Tethered shooting from a USB camera.
• Lumen now opens every RAW format macOS reads, including CR3, ORF and RW2.
Everything runs on your Mac. Nothing is uploaded.
The developer, Shiva Prasad Manupadi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shiva Prasad Manupadi
- Size
- 158 MB
- Category
- Photo & Video
- Compatibility
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- Mac
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lumen Pro $9.99
- 7-day Trial $0.00
- Copyright
- © 2026 Papermint Studio
