Slicer

/ screenshot → zones → png
Drop a screenshot
or paste ⌘/Ctrl + V · or click to choose a file

Keyboard shortcuts

Editing
Undo ⌘/CtrlZ
Redo ⌘/CtrlZ
Duplicate selected zone ⌘/CtrlD
Remove selected zone Delete/Backspace
Image
Paste image from clipboard ⌘/CtrlV
Pointer
Draw a zone Drag on image
Move a zone Drag the zone
Resize a zone Drag the corner handle