I've got a Finder window and I want to Maximize it. But when I click the Zoom button (green button on the top-left side of the window) while pressing the Option key, it just does a little bit of zooming, it doesn't do what I call "maximize", which is to take the whole screen. Here's a demo:


Any way to "maximize", the same way we "maximize" on Windows systems?

  • I think it’s Cmd or Opt double click on any corner. I have an answer to a similar question on here somewhere but on phone so can’t find it right now.
    – Tetsujin
    Nov 18, 2021 at 14:40
  • 1
    @Tetsujin ah yes, it's Option+Click on a corner to take all the space on the screen (without going full screen). I didn't know shortcuts and window management on Mac OS were going to give me so many headaches. I find this OS anything but intuitive. Thank you so much! Nov 18, 2021 at 14:43
  • Welcome. If you delve far enough into it you’ll find it’s hugely controllable, but that makes it tough to remember all the possibilities.
    – Tetsujin
    Nov 18, 2021 at 14:50
  • Try variants of situations in which that double arrow occurs - you can drag, opt/drag to do different things. There's an oft-forgotten variant - Press Cmd first & you can act on a window not currently in focus… without it coming to the front. [This works for clicks too, & also into a different app that's not in focus]. This acts like a large extension to being able to scroll any window without first bringing it forward.
    – Tetsujin
    Nov 18, 2021 at 18:11

2 Answers 2


Hold the Option key and double-click on any corner of the window. That will do what you want.

When you double-click on an edge of a window it will snap to the edge of the screen. Do that with the corner and the corner snaps to the corner of the screen. Holding option will do it with the current edge or corner and the opposite one. So Option+double clicking any corner will snap that corner and the opposite corner to the corners of the screen, making the window fill the screen without going into Full Screen mode.


When i click the green button, without any modifier keys, it expands the active window to fill the screen, hiding the top menu bar.

If I use Option and click the button it maximises but keeps the top menu visible.

  • Yeah that "full screen" behavior is pretty annoying because it 1) hides the top bar 2) makes it impossible to drag the window around and 3) it creates a new Desktop for the window and moves it all the way to the end of desktops, so if you have your desktops arranged a certain way, it will mess things up. Nov 18, 2021 at 14:37
  • Opt/green is fine for many things, but it doesn't always fill the entire screen. Only the Opt d/click in a corner guarantees to do that. As for fullscreen… I don't have sufficient polite words to adequately describe what I think of it ;))
    – Tetsujin
    Nov 18, 2021 at 18:07
  • @Tetsujin I never use it either, but I did descrtibe how it worked - downvoter take note, at least what I did was useful...
    – Solar Mike
    Nov 18, 2021 at 18:46
  • Downvoter was me. OP already said they'd tried Opt/green with no joy.
    – Tetsujin
    Nov 18, 2021 at 18:53
  • @Tetsujin so you missed the first line...
    – Solar Mike
    Nov 18, 2021 at 19:01

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