Command + Shift + 3: the whole screen

The fastest capture on macOS. Three keys, no aiming, file on the desktop before you've let go.

Updated 15 September 2026

What it captures#

Everything currently on the display: your menu bar, the Dock if it's visible, every open window, and your wallpaper. There's no selecting and no confirmation — you hear a shutter sound and the file exists.

Multiple displays get separate files#

With an external monitor connected, one press produces one file per display, numbered Screenshot ... .png and Screenshot ... (2).png. macOS never merges them into one wide image, which is the opposite of what Windows does.

The order isn't always intuitive — it follows the display arrangement in System Settings rather than which screen you were looking at. With three monitors, expect to open all three files to find the one you wanted.

Retina resolution and file sizes#

On a Retina MacBook the capture is taken at the backing resolution, not the logical one, which is why a full-screen grab produces such a large file. A 14-inch MacBook Pro reporting 1512 × 982 points produces an image around 3024 × 1964 pixels.

That's why a single capture can be 3–8 MB. It's also why a Mac screenshot looks noticeably sharper than a Windows one when viewed at full size. If the size is a problem, switch the format to JPG or HEIC rather than scaling the image down. Changing the save location.

Sending it to the clipboard instead#

Add Ctrl: Cmd+Ctrl+Shift+3. No file, no shutter, no thumbnail — the image sits on the clipboard for Cmd+V.

The four-key stretch is awkward. A common remap is to swap the two behaviours in System Settings › Keyboard › Keyboard Shortcuts › Screenshots, so the three-key version copies and the four-key version saves.

When to use it, and when not to#

Use it for documenting a sequence of steps, capturing a whole layout, or showing someone the state of their entire desktop for a support request.

Don't use it when you want part of the screen. You'll crop every capture, and on a Retina display you'll throw away 80% of a large file to do it. Cmd+Shift+4 is the better tool. Why area selection is usually better

Silencing the shutter#

The sound follows your system volume, so muting the Mac silences it. To keep audio but lose the shutter, turn off Play sound on screenshot in System Settings › Sound, or use the Cmd+Shift+5 toolbar's Options menu.

Of the three numbered shortcuts this is the bluntest; the MacBook overview explains when each one fits.