How do you use the GRAB tool?

You can start Grab by using Spotlight Search (Command + Spacebar or magnifying glass at upper right of menu bar) and typing Grab. The following discusses other methods: How to take a screenshot on your Mac - Apple Support

To use Grab, see the following copied from Grab help:

Grab Help

Take pictures (screenshots) of all or part of your screen.

Open Grab for me

• Capture the entire screen: Choose Capture > Screen.
• Capture part of the screen: Choose Capture > Selection, drag the pointer across the area you want to capture, then release the trackpad or mouse button.
• Capture a window: Choose Capture > Window, then click a window.
• Capture an active item: Choose Capture > Timed Screen, then click Start Timer. Make the item active (for example, open a menu), and keep it active until after the Timed Screen Grab dialog closes.
• Enable sound effect: Choose Grab > Preferences, then select Enable Sound. When you take a screenshot, you’ll hear the sound effect of a picture being taken.
• Include a pointer in a screenshot: Choose Grab > Preferences, then select a pointer. The pointer appears where it’s located when the picture’s taken.
• View screenshot information: Choose Edit > Inspector.
• Save screenshots: After taking a screenshot, choose File > Save, enter a name, add a tag (optional), then choose a folder. Screenshots are saved as TIFF files.
• Convert a screenshot to another format: Open your screenshot in the Preview app. Choose File > Export, click the Format pop-up menu and choose a format, then click Save. For more information, see Convert graphics file types.

SEE ALSO

Take pictures of the screen

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