Split one image across every key of a Stream Deck surface, so the fragments line up on the hardware. Everything runs in the browser and works offline.
The gutter is the physical bezel between keys. It is cut out of the image so the fragments line up on the real device. Use 0% for the Emulator, Web Buttons or mobile, which have no bezel.
You can also drag the preview to pan, and scroll or pinch to zoom.
Drag to pan · scroll or pinch to zoom
The striped band marks the Companion topbar. Set Decoration → None on keyvisual buttons so it doesn't cut into your image.