Been there

It turns flat artwork into an embroidered patch, in the browser, while you watch. Drop in a PNG and it separates the colours into regions, lays thread across each one at the density and angle you set, and finishes the edge with a merrow border you can colour and raise. Soft cotton, classic satin and bold merrow are three real stitches rather than three filters, and the readout along the bottom counts the regions and the stitches each patch took. Several sit on one canvas and restack, and what comes out is a PNG. With no artwork to hand, it gives you a prompt written for pictures that stitch cleanly, to paste into any image generator and bring back. By Sue Park, free, nothing to sign up for.