When you’re happy with your annotations, you can export a JPG or PNG file, or even send the app to an external editor like Photoshop.
You can invoke an area or full-screen capture from the keyboard, and you’ll have access to the annotation tools as soon as the capture it taken. The screenshot utility is slim and easy to use. Monosnap is a uniquely powerful screenshot tool.
Check out these third-party options to expand your screenshot toolset. But if you take a lot of screenshots, you might start to notice limitations. By default, macOS contains a pretty impressive collection of screenshot capabilities.