jigsaw Together is a jigsaw puzzle game that supports custom materials.
In this game, you can customize the number of puzzle pieces and use local images, MP4 videos, or specify web pages as background materials for playing.

Here are the key controls:

Left mouse button: Select
Right mouse button: Move
Mouse scroll wheel: Zoom in/out
Spacebar: After selecting a puzzle piece, automatically provides hints for connecting surrounding puzzle pieces
+/-: Zoom in/out of all the preview images in the upper right corner.