Create Thumbnail Poster is a free Automator action that creates a multi-page 20" by 30" PDF document of thumbnails of the images passed into it from the previous action.

Thumbnails can be in either of three formats: square (96 images per page), horizontal (72 images per page), or vertical (72 images per page). The resulting file can be limited to a single page of the first group of images.

NOTE: The original images are not altered. The resulting file can be very large in size, it is not unusual to have files over 300 Mb in size.

Requirements:

· JPEG, TIFF, or PNG images
· 5 Gb of disk space
· iPhoto