Windows (full screen): Press `PrtScn`
Windows (active window): Press `Alt` + `PrtScn`
Windows (select area): Press `Win` + `Shift` + `S`
Windows (opens Snipping Tool): Press `Win` + `Shift` + `S` or search for “Snipping Tool”
Windows (save to file automatically with Snipping Tool): Use `Win` + `Shift` + `S`, then click the notification
Mac (full screen): Press `Command` + `Shift` + `3`
Mac (selected area): Press `Command` + `Shift` + `4`
Mac (window screenshot): Press `Command` + `Shift` + `4`, then press `Space`
Mac (screenshot menu): Press `Command` + `Shift` + `5`
Chromebook (full screen): Press `Ctrl` + `Show windows` (key with a rectangle)
Chromebook (partial): Press `Ctrl` + `Shift` + `Show windows`
Chromebook (window): Press `Ctrl` + `Alt` + `Show windows`