This GIMP (GNU) tutorial demonstrates how to apply GIMP’s Jigsaw Filter. To work along, you are welcome to download the Start Image I am working with Here. Unzip the file and open the image onto GIMP’s workspace.
You can quickly Undo a step at any time by pressing Ctrl then Z. Alternatively, click a previous Undo History snapshot - Windows then Dockable Dialogues then click Undo History. In addition, to Zoom in (or Zoom out) of your image; from the top menu choose View then select a Zoom Tool from the subsequent drop-down list.
Launch GIMP & Organise Its Workspace & Palettes
Open your choice of Start Image onto GIMP’s workspace - File then Open - Ctrl then O.
Ensure the Layers and the Undo History Palettes are visible, and then drag them into position over your workspace - (Windows then Dockable Dialogues - then click Layers and Undo History).
Now, from the top menu, choose Filters then choose Render and then choose Pattern and then choose Jigsaw. And from the subsequent Jigsaw dialogue box, experiment with the settings, and then click OK.
This filter will turn your image into a jigsaw puzzle. The edges are not anti-aliased, so a little bit of smoothing often makes them look better (for example, apply the Gaussian Blur Filter with Radius 1.0 - top menu, then Filters then Blur then Gaussian Blur).
If you want to be able to easily select individual puzzle-piece areas, render the jigsaw pattern on a separate Layer filled with Solid White, and set the Layer (Blend) Mode to Multiply. You can then select puzzle pieces using the Fuzzy Select Tool on the new Jigsaw Layer.
Congratulations, your Jigsaw Conversion is complete, and it is ready to save - top menu, then File then Save As. GIMP 2.8 - File then Export.
Wendi E. M. Scarth. Top of Page.