StickerBleed adds a contour border that follows the shape of a transparent PNG instead of drawing a square frame around the canvas. Upload a transparent PNG of up to 4000x4000px and 10MB, choose a thickness from 2 to 20px and a color (white is the default), and preview the original against the result. It uses a conventional alpha-silhouette method and does not use AI.
It is free, with 10 generations per IP per day. Anonymous previews are watermarked, and a free account is needed to download a clean PNG.
StickerBleed is aimed at sticker and Etsy/POD sellers who need white outlines or die-cut margins without a square frame around the artwork.