Apple Aperture 2 - Manual (Page 507)

Chapter 17 Exporting Your Images 507
IV
To create a new export preset:
1 Choose Aperture > Presets > Image Export.
The Export Presets dialog appears.
2 Select an export preset on which to base your new preset, then click the Add (+) button.
A new preset appears highlighted in the Export Preset Name list.
3 Enter a new name for the preset.
4 Change the export settings as required, then click OK.
Modifying an Export Preset
You can modify existing presets when you need to. The next time you export using that
preset, Aperture remembers your modified settings and exports your images accordingly.
To modify an existing preset:
1 Choose Aperture > Presets > Image Export.
The Export Presets dialog appears.
2 Select the preset you want and change its settings as required, then click OK.
Select a preset on which
to base your new preset.
Click the Add button to
add a new preset.