Doppelganger

Doppelganger

Find duplicate and visually-similar photos in any folder. Move what you don't want to the system Trash — locally, reversibly, free.

Screenshot of Doppelganger showing two clusters of similar photos with a suggested keeper marked in green and the rest pre-checked for the Trash.

Download

macOS Apple Silicon .dmg macOS Intel .dmg Windows x64 .exe Linux x64 .AppImage

macOS: the build is unsigned. After dragging it into Applications, run this once: 

xattr -d com.apple.quarantine /Applications/Doppelganger.app

How it works

  1. 1. Point it at a folder

    Pick any directory — Downloads, an export, an external drive. Doppelganger walks the tree and skips your Photos library bundle.

  2. 2. It finds the twins

    First pass: byte-identical duplicates (content hash). Second pass: visually similar — resized, recompressed, slightly cropped — via perceptual hashing.

  3. 3. You choose what stays

    Each cluster gets a suggested keeper. Untick anything you want to keep, hit Move to Trash. Recover with Finder “Put Back” if you change your mind.

Build from source

Prerequisites: Rust 1.92+, Bun (or Node 20+ / npm / pnpm), and your platform's Tauri prerequisites (webview deps on Linux, Xcode CLT on macOS, MS Build Tools on Windows). 

git clone https://github.com/emerleite/doppelganger
cd doppelganger
bun install
bun run tauri dev      # run from source
bun run tauri build    # produce a release bundle in src-tauri/target/release/