phash

This is a command-line tool to detect (potential) duplicate images.

Use

Use it on one or more directories:

phash ~/Pictures ~/Downloads
~/Pictures/frog.jpeg, ~/Downloads/frog.png

Installation

Script

On many platforms, you can install with a script, viz.

curl -sSl https://raw.githubusercontent.com/vmchale/phash/master/bash/install.sh | sh -s

Pre-Built Release

Download the latest release from here.

Source

Download cabal-install and GHC. Then:

cabal new-install perceptual-hash