What is “perceptualdiff” Package?

Perceptual image comparison tool
For more details: https://pdiff.sourceforge.io/

Installation

• Open Terminal by pressing command+space then type terminal and hit Enter key.
• Install homebrew first.

  ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

• Install perceptualdiff.

  brew install perceptualdiff

Now, use perceptualdiff!