ON THE ROAD, no time to read right now, but this article from DB Services looks interesting:
If you're anything like me, you've had moments where you needed to modify an icon in an inherited FileMaker solution, but couldn't, because you couldn't get the icon out of FileMaker. Embedding an image in a layout is, at first glance, a one-way street: Once inserted as a graphic, via Insert>Picture in layout mode, the image cannot be directly exported back out through commands in FileMaker's GUI. But if there's a will, there's a way. Images embedded in layouts can ultimately be extracted, with a little sweat and determination, by converting the image's hexadecimal representation in a Database Design Report (DDR) to the original image.
Watch a Demo of extracting an image embedded in layout out of FileMaker
Check it out and let me know what you think.