When taking screenshots, selecting oddly shaped items in an image is usually a task saved for your favorite image editing application. Screenshot FX (Mac App Store link) makes selecting a specific area of an image something you can do right as you take a screenshot.
Installing the app adds a menu extra to your menubar and a Command-5 keyboard shortcut to your system. Invoking the app using the shortcut or menubar brings up a specialized selection tool you use to trace the edges of the portion of the image you want to snap.
To read this article in full or to leave a comment, please click here