How to Make a JPEG Screenshot on an Apple


Mac computers have long had the capability to take a snapshot of their screen contents through the system software. This is a convenient tool if your computer freezes up and you need to retain an image of your work before you lose it, or if you want to capture a graphic and don't want to right-click on the image to save it. You can snap a section of the screen by dragging the cursor across a portion it, or let the Mac perform a full window snap. Either way, Mac OS X currently saves the graphic in PNG format; saving it as a JPEG takes a simple step in Preview, which is included on every Mac.

  • Press and hold the "Command," "Shift" and "3" keys simultaneously to take a shot of the entire screen. Press the "Command," "Shift" and "4" keys to use the crosshairs to drag across a portion of the screen. You hear a camera shutter effect as the Mac snaps the picture.

  • Locate the captured shot on your desktop, which is designated by "Picture x." Click once on the icon of the screenshot.

  • Press "Command" and "I" to bring up the screenshot's Info window. Click on the Open With pane in the middle of the window. Select the pull-down menu and choose "Preview."

  • Double-click on the "Picture x" icon on the screen to open it in Preview. Click "File," "Save As" to open the Save As dialog box. Click on the "Format" pull-down menu and select "JPEG." Assign a filename in the Save As text box and click "Save." Your screenshot is now a JPEG file on your desktop.

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  • Photo Credit Justin Sullivan/Getty Images News/Getty Images
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