

Shift-Command-5: In macOS Mojave or later, take a screenshot or make a screen recording.
Command-Tab: Switch to the next most recently used app among your open apps.Space bar: Use Quick Look to preview the selected item.Control-Command-F: Use the app in full screen, if supported by the app.Control–Command–Space bar: Show the Character Viewer, from which you can choose emoji and other symbols.Learn how to change a conflicting keyboard shortcut.) (If you use multiple input sources to type in different languages, these shortcuts change input sources instead of showing Spotlight. To perform a Spotlight search from a Finder window, press Command–Option–Space bar. Command–Space bar: Show or hide the Spotlight search field.To close all windows of the app, press Option-Command-W. Command-O: Open the selected item, or open a dialog to select a file to open.

To minimize all windows of the front app, press Option-Command-M.
