Saving an obj with its surface

I order to make a wall poster, I've defined a primitive plane, converted to Iray, then used a jpeg as Base color in the Surface property.
How can I save the poster as a Prop without having to keep the jpeg saved somewhere? (Can the jpeg be 'embeded' in the obj primitive?)
Comments
Textures cannot be embedded in saved files, no - theya re always external file references.