# Show extensions

Show all file extensions in the Finder.

  • Tested on macOS:
    • Big Sur
    • Catalina
    • Mojave
  • Parameter type: bool

# Set to false (default value)

defaults write NSGlobalDomain AppleShowAllExtensions -bool false && killall Finder
  • Do not show all file extensions inside the Finder

# Set to true

defaults write NSGlobalDomain AppleShowAllExtensions -bool true && killall Finder
  • Show all file extensions inside the Finder

# Read current value

defaults read NSGlobalDomain AppleShowAllExtensions

# Delete current value

defaults delete NSGlobalDomain AppleShowAllExtensions && killall Finder