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On a Mac, while using Quick Look to briefly view the contents of a file (by pressing the space bar while the file is selected in Finder), one can use the option ⌥ key to achieve two results, depending on the file type:

  1. Convert the scroll gesture into a convenient zoom. The user custom sets the zoom amount.

    • For example, if the file is a PDF.
  2. The option ⌥ key instantly triggers a fixed zoom. Scrolling only affects the coordinates of the displayed area, and does not affect the zoom amount.

    • For example, if the file is a JPEG.

Is it possible to change this key, from option ⌥ to, for example, control ⌃?

The hotkey for Quick Look zoom is mysteriously absent from the "Zoom" sub-category within the "Accessibility" menu in System Preferences:

Accessibility menu

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To have System Preferences > Accessibility > Zoom use e.g. ^⌘8, instead of ⌥⌘8 as shown in the image below:

Image

Go to System Preferences > Keyboard > Shortcuts > Accessibility > Zoom and change the keyboard shortcuts from the default, as shown in the image below:

Image

To as shown in this image below:

Image

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  • Thanks! Somewhat irrelevant question: Do you know the significance of "⌘8" or "⌘="? I mean, why are these peculiar key combinations the default? Apr 1 '17 at 22:43
  • @rubik's sphere, You'd have to ask Apple why they made the default shortcuts for this what they did. Apr 1 '17 at 23:34

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