OS X El Capitan: Zoom pane of Accessibility preferences
Make items on the screen appear larger.
To open this pane, choose Apple menu > System Preferences, click Accessibility, then click Zoom.
| Use keyboard shortcuts to zoom | Use the listed shortcuts to zoom in and out. For example, to zoom in, press Option-Command-Equal Sign. |
| Use scroll gesture with modifier keys to zoom | Hold down the selected modifier key while scrolling with your trackpad or the scroll wheel on your mouse. For example, with the default trackpad settings, hold down the Control key and drag two fingers up (to zoom in) or down (to zoom out). |
| Smooth images | Make zoomed images appear smooth. |
| Zoom follows the keyboard focus | Magnify the area that has the keyboard focus. |
| Zoom Style | Show the magnified image on the entire display (Fullscreen) or in a window (Picture-in-picture). |
| More Options | Specify options for full-screen or picture-in-picture zoom. |
To quickly set zoom options, press Option-Command-F5.
You can enable keyboard shortcuts for some zoom options in the Accessibility section of the Shortcuts pane of Keyboard preferences. To open the pane, choose Apple menu > System Preferences, click Keyboard, then click Shortcuts.