“Re-does” the previous undo action, putting it back one step. A Redo can only change back an action that has previously been “undone” with the Undo tool.

You can toggle the state of Redo and Undo, back and forth, to examine the last change you’ve made to an image as a way of judging if you like the effect.

Redo is also one of the default tools shown in the Quick Access toolbar at the top of the ribbon. This allows you to use this function wherever you are working in HyperSnap.