You may need to capture what is shown on your screen to share with someone else.

The method for capturing a screen shot varies by operating system.

• Windows 10: You can either use a keystroke, or the Snip & Sketch tool. See this CNet Page for more details.
  • Keystroke
    • Pressing the Print Screen key will copy the current screen to the clipboard, so you can paste the image where you want it.
    • Pressing the Windows key + Print Screen key together will capture the screen and save the image to Pictures → Screenshots.
    • Pressing Alt + Print Screen together copies the current window to the clipboard.
  • The Snip & Sketch tool can be opened by pressing the Windows key + Shift + S. For more details on using Snip & Sketch, see this CNet Page.
• Macintosh: You can either use a single keystroke, or the Screenshot application.
  • Using a keystroke: (See also Apple Support Page)
    • To capture the entire screen: Press and hold Cmd + Shift + 3 together. (That is, the Cmd button, the Shift key, and the number 3).
    • To capture a region: Press Cmd + Shift + 4 together. Your cursor becomes a cross-hair icon. You can click and drag this over the region you want to capture. When you release, the region will be captured.
    • To capture a window: Press Cmd + Shift + 4 + Spacebar. Your cursor becomes a camera icon. Click the window you wish to capture. (It will highlight when you mouse over it.)
  • For more flexibility, including an option to annotate your screenshot afterwards, use “Screenshot” app. (You can search for it using the Launch Pad, or look for it in Applications → Utilities.) See the Apple Support Page for more information.
  • In all cases, the screen shot will save on your desktop with a title “Screen Shot” and the date and time by default.
• Linux
  • You can either use a combination of keystrokes, or a screenshot application.
  • Keystrokes may depend on the version of linux you are using.
    • To capture the entire screen: Press PrtScr. This will save a copy of the entire screen to the ~/Pictures directory.
    • To capture a window: Press ALT + PrtScr (unmodified). This will save a copy of the window under the mouse pointer.
    • To capture a region: Press and hold shift, press and release PrtScr. This will change the mouse pointer to a + and you can select a region of the screen with the left mouse button.
    • Modifying each of these commands by adding the CTRL key will copy the selected image to the copy buffer.
      • Hold CTRL, Press PrtScr will copy a screen shot of the entire screen to the copy buffer.
      • Hold CTRL, Hold Alt, Press PrtScr will copy the selected window to the copy buffer.
      • Hold CTRL, Hold Shift, Press PrtScr will allow you to select a region of the screen and copy it to the copy buffer.
  • For more flexibility, there are multiple applications available that will allow you to take a screenshot.