Enable Screen Zoom in Mac OS X Lion

Jan 2, 2012 - 20 Comments

Screen Zoom in OS X Lion

Screen zoom is a useful feature of Mac OS X that zooms into the screen where ever the cursor is located. The feature was enabled by default in prior versions of Mac OS X whenever the control key was held down, but in OS X 10.7 Lion it has been turned off by default and is now a feature of Universal Access.

How to Enable Screen Zoom in OS X Lion

  • Open System Preferences from the Apple menu 
  • Click on “Universal Access” and then click on the “Seeing” tab
  • Check the box under “Zoom” to “ON”

Screen Zoom in OS X Lion

Now with Screen Zoom turned on, the feature can be accessed with either the trackpad, mouse, or keyboard:

Zoom with Trackpad or Mouse
For trackpads, scrolling is achieved with two fingers gesturing up or down, with a mouse it’s simply the scrollwheel in either direction, with both you need to hold down the Control key to access.

  • Control+Scroll Up to zoom in
  • Control+Scroll Down to zoom out

Zoom with Keyboard
New to Screen Zoom in OS X Lion are keyboard shortcuts to zoom in and out:

  • Command+Option+= to zoom in
  • Command+Option+- to zoom out

Just like other versions of Mac OS X, you can still toggle anti-aliasing on and off within the Zoom feature by hitting Command+Option+/.

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Posted by: Paul Horowitz in Mac OS X, Tips & Tricks

20 Comments

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  1. Enrico says:

    FYI I am not sure about Lion, but in Snow Leopard toggling anti-aliasing was
    Command+Option+\
    (notice the back slash instead of forward)

  2. dZign says:

    it’s in zoom options ;)

  3. Anthony says:

    Finally! I thought they had pulled this feature out of Lion completely.

  4. René Dubois says:

    Confusion is caused by adjusting settings after habits have become established. I question why Apple developers made the decision to disable such a function, causing one to dig for the solution.

  5. Alan says:

    I don’t know why but I seem to be able zoom in and out using the ctrl and two finger trackpad gesture or scroll wheel without turning Zoom on, although it needs to be on for the Zoom with Keyboard options to work.
    (2009 MacBook, OSX 10.7.2)

    • SID says:

      That is because in settings in the Zoom Pane under the options tab you have checked the last option that controls zooming with mouse or trackpad. This works irrespective you turn Zoom on or off :) Hope this helps!!

      • Alan says:

        Spot on. Thanks for that.
        I wonder why the article didn’t mention that?
        A case of Apple giving us too many options?

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  8. Carl says:

    In Mac Lion, you can disable anti-aliasing by “System Preferences > Universal Access > Seeing” Make sure Zoom is on; choose Options; and uncheck “Smooth Images”

    Cheers!

  9. iGnome says:

    For some reason this is not working on my MBP running Lion. Even with the zoom set to on, holding down ctrl whilst 2 finger track pad scrolling does nothing. (But checking the zoom in window box works)

    However regardless of having zoom set to on or off using CMD+= or CMD+- still seems to zoom the screen as it has always done

    • Ronny says:

      Go to System Preferences
      Click Universal Access
      Click Zoom; On
      Then on the right click Options
      Set max zoom to 20
      Set minimum zoom to 2
      Then go down to the last line and check the box:
      Use scroll keys with modifier to zoom
      Set your modifier key in the box(I use Command)
      Then click DONE

      It works with my trackpad and mouse.

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  12. rafael says:

    when I enable it, it zooms in automatically and I can’t either zoom in or out. already tried pressing control or cmd + scroll. can someone help me?

  13. Bradley Ricketts says:

    Thanks so much! Very helpful! I was frustrated I couldn’t use the zoom feature like I had on my old mac. Now it works great!

  14. [...] can still zoom into webpages by using the traditional keyboard shortcuts, and you can still use the two-finger screen zoom as well, which is activated with a scrolling motion and hot [...]

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