Change Where Your Mac Screenshots Are Saved
By default, screenshots are saved to your desktop, but you can change that. Open the screenshot tool with Shift+Command+5, or by going to Launchpad > Other > Screenshot > Options. Under the menu section Save to, you can select a new default location, like Documents, Clipboard, Mail, Messages, or Preview. Or click Other Location to choose a specific folder.
Instead of saving screenshots directly to your computer, you can instead send them to the clipboard by adding the Control key to any shortcut command. For instance, use Shift+Command+Control+3 to capture the entire screen, or Shift+Command+Control+4 to take a screenshot of a portion of the screen. You can then paste the screenshot anywhere you like.