[magick-users] Adding an image preview to the profile

[Seth Price]

I'm working with some large files (14400x14400px) and I would like to  
add preview data to the files. Example: I view the image's icon in my  
OS (Mac or Win), and the OS helpfully attempts to generate a preview  
icon (this takes a while).

How can I use ImageMagick to embed a preview image in the file so the  
OS wastes less time? I'm fairly sure I've seen something like this  
done before (like with digital camera pics). What's the best way to  
do this to PNG, TIFF, and JPEG files?
Thanks,
Seth