Deskpad - A Virtual Monitor for Screen Sharing
If you have a large monitor and have the need to share your screen with others, you can experience issues when they can't match your resolution. The free app, Deskpad, creates a virtual display within an application window that you can easily share with others. Launching Deskpad is equivalent to plugging in an additional monitor. You can use the display settings in System Settings to change the resolution and wallpaper, as well as any other monitor specific setting you have access to. Whenever you move your cursor to the virtual display, the color of the window title changes to blue, so you will know it is active.
You can download the latest version from Github or use Homebrew.
brew install deskpad.
The current version is 1.3.2, released in October 2024.