Show HN: Imagin Raw – A 9MB Open-Source Alternative to Adobe Bridge for Mac

A lightweight, native macOS application for browsing, culling, and organizing RAW photos - built as a more efficient alternative to Adobe Bridge for read/rate/organize workflows. An iOS companion app is in development, focused on a simple way to browse your library, cleanup, in field backup of your shots, and scouting. Architecture UI: SwiftUI (macOS 14.6+). AppKit/UIKit for the thumbnails list where SwiftUI performance was poor RAW decoding: LibRaw (C++), wrapped via Objective-C++ bridge. CoreImage also used for other formats and as a fallback Metadata: EXIF parsed directly from RAW/JPEG binary structures; XMP sidecars read/written for Lightroom/Bridge compatibility File system monitoring: FSEvents for real-time folder change detection Search: NSMetadataQuery (Spotlight) for indexed file/folder search Concurrency: A mix of Tasks and OperationQueue Features Multi-root folder browsing - add any number of folders from local disks, external drives, or SD cards; no import step, no managed library Real-time file system monitoring - new photos, deletions, and folder structure changes are detected and reflected immediately RAW format support - via LibRaw, covering a broad range of camera manufacturers and formats Rating and color labeling - written to XMP sidecars (RAW) or embedded directly without re-encoding (JPEG/HEIC), compatible with Adobe Bridge and Lightroom Rejection workflow - a session-scoped label (not persisted across folder changes) for marking photos to delete; batch-delete via right-click JPG/RAW pair deduplication - when a RAW+JPEG pair exists, only the RAW is shown in the browser Two grid layouts - compact grid (more room for preview) and large grid (more room for browsing) Spotlight-backed search - search across files and folder names using the macOS indexing engine SD card ingest - copy photos into date-based folder structures, with optional simultaneous backup to a second destination Duplicate/similar photo detection - Review mode for quickly resolving near-duplicate burst shots Instagram frame export - fits 2:3 RAW images into a 3:4 canvas, exported as PNG to avoid re-encoding loss (useful for Camera Raw edits because it doesn't support framing) Comparison with Adobe Bridge Where Imagin RAW is better Imagin RAW Bridge App size ~9 MB ~2 GB Idle CPU 0% non-zero Memory As low as 100 MB depending on the album Easily gets to GBs Launch time Near-instant Many seconds Scrolling Native, smooth Row-jumping External drive eject No app restart needed Requires quitting Bridge Where Bridge is ahead Camera Raw–processed previews - Bridge renders thumbnails with ACR adjustments applied. Imagin RAW currently shows unprocessed previews; replicating the ACR pipeline isn't feasible, though basic exposure/crop preview adjustments may be explored. Roadmap See the open Issues Screenshots Keyboard Shortcuts Arrow Keys - Navigate between photos CMD A - Select all photos CMD Click / Shift+Click - Multi-select photos CMD Del - Move photos to trash CMD Z - Undo photos moved to trash 1-5 - Set Star Rating 6-0 - Apply Labels - - Remove label A - Approve photos (same as the 8 key) X / Del - Reject photos OPT 1-5 - Filter by Star Rating OPT 6-0 - Filter by Labels OPT X - Filter by Rejected C - Toggle Sidebar G - Toggle Grid Type Return - Open selected photo(s) in external editor System Requirements macOS 14.6 or later Apple Silicon or Intel processor Installation Buy from the AppStore if you want to support the project and receive updates automatically Download the latest release from Releases. Updates might not be on par with the AppStore and there's no update notification in app Compile from source code Contributions Small straightforward fixes and issue/ideas reportings are welcome.