Apple Aperture - Manual (Page 356)

356 Part III Distribution and Backup
8 When you’re satisfied with how your watermark appears in the watermark preview
area, click OK.
Tips for Creating High-Quality Watermarks
Use the following guidelines to create high-quality watermarks for your images:
 Save your watermark as a .psd (Photoshop) file with a transparent background.
 Create multiple sizes of your watermark so that you can select the one that is the
best match for the output size of the exported image.
Note: If a watermark file is larger than the image you wish to export, Aperture
automatically scales the watermark down to fit the image. (Aperture does not scale
watermarks up.)
 After you create a watermark, save it as part of a web export preset, so you can
reuse it as often as you need.
Note: Export presets and web export presets are independent of one another.
Make sure to save your watermark as part of the appropriate preset.