In order to convert JPEG picture (.jpg, .jpeg) to a 3D model for 3D printing (.stl file), you would have to use a program capable of generating 3D meshes from pictures. You can find plenty of tutorials all over internet for this procedure, even some informative "how to" YouTube videos do nicely explain how to convert pictures for 3D printing. Several online services also offer jpg to stl conversion for money.
Updated: May 26, 2022
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