This page describes in detail many options.
For the quick and dirt
A pop-up should appear asking where you want to save the file.
Shortcut | Description |
---|---|
Cmd-^-3 | Take a screenshot of the screen, and save it as a file on the desktop |
Cmd-^-4 | then select an area: Take a screenshot of an area and save it as a file on the desktop |
Cmd-^-4 | then space, then click a window: Take a screenshot of a window and save it as a file on the desktop |
Cmd-Ctrl-^-3 | Take a screenshot of the screen, and save it to the clipboard |
Cmd-Ctrl-^-4 | then select an area: Take a screenshot of an area and save it to the clipboard |
Cmd-Ctrl-^-4 | then space, then click a window: Take a screenshot of a window and save it to the clipboard |
In Leopard, the following keys can be held down while selecting an area (via Command-Shift-4 or Command-Control-Shift-4):
Different versions of Mac OS X have different formats for screenshots.
In Mac OS X 10.4 and later, the default screenshot format can be changed, by opening Terminal (located at /Applications/Utilities/Terminal) and typing in:
defaults write com.apple.screencapture type image_format killall SystemUIServer
Where image_format is one of jpg, tiff, pdf, png, bmp or pict (among others). If you omit the second line, you will need to log out and in again for the change to take effect.
Instead of using the keyboard shortcuts above, screenshots can be taken by using the Grab application included with Mac OS X. It is located at /Applications/Utilities/Grab.
In Mac OS X 10.4, the Preview application can also be used to take screenshots, by using the Grab submenu in the File menu.
The screencapture command in the Terminal can also be used to capture screenshots, and is useful for scripts. Here is an example.
screencapture -iW ~/Desktop/screen.jpg
Note: Mac information taken from MacRumors