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177 Stars 15 Forks MIT License 73 Commits 4 Opened issues


Mac OS X Picture in Picture

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Mac OS X Picture in Picture

Always on top window preview similar to the popular windows only OnTopReplica

PiP demo

Code Info

  • Nibless cocoa app
  • OpenGL/Metal renderer
  • CoreGraphics based capturer (looking for alternative)
  • No third party dependency
  • Uses private framework for native pip support


  • Clone any visibile window
  • Crop the preview
  • Auto and manual resize preserving the aspect ratio
  • Multiple window preview from same process,
    to open and
    to close
  • Pinch to zoom
  • Native picture in picture support
  • Transparency/opacity control (slider in right click menu)
  • Minimal modern UI

To do

  • Almost all the missing features when compared to OnTopReplica


Manual download


Download and install via Homebrew

brew install --cask amitv87-pip

Build from source and run

# checkout code
git clone
cd pip

build using xcode

xcodebuild open build/Release/

or simply


right click on the window and select an option from the list

right click again and select last option to crop the preview

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