Jigsaw Scanner
Jigsaw Scanner
Point your phone at one jigsaw piece at a time. The app traces its exact outline right on your phone, labels it with a number and builds a catalog of every piece's four sides – then tells you which pieces fit together, or assembles as much of the puzzle as it can.
Piece analysis & solver: byWulf/jigsawlutioner by Michael Wolf (MIT). On-device segmentation: MobileSAM via ONNX Runtime Web. Demo pieces from jigsawlutioner-cli.
Next label: 1 – you can change it in the scanner.
A phone camera does not know how far away the piece is, so without a reference every piece is scaled to the same size – fine for finding neighbours, but the solver assembles more when real sizes are known. Print a scan card, lay each piece in its middle and let the card fill the view: the scanner then also corrects perspective and measures pieces in millimetres.