Onion Lab

Drop master sheet PNG here or click to load

Sheet name FPS loop Dir No sheet loaded

Preview

BG onion flipX

frame — ms

Timeline (playback order)

Chroma / detect

Hide chroma on sheet & preview

Key

R G B Tol Min W Min H Merge Bridge Pad

Selected detect box

x y w h anchor X% anchor Y%

Boxes live in one shared pool. Empty-drag selects enclosed boxes · Ctrl/Cmd+click toggles · Delete removes all selected. Cyan diamond = character anchor — Alt+drag (snaps to bottom when close); Alt+Shift+drag unlocks. Without Alt, bottom-middle gold handle resizes. Alt+click edge to add a vertex · S snap · Enter add to timeline · Shift+drag draw new box.