Reducing file size
I need to reduce the file size of my JPG images to under 5MB in order to export them to another site. How do I do this?
Aperture 3
Select your image versions in the Browser and use "File > Export > Versions".
In the "Export" panel set the "Export Preset" to a suitable jpeg preset, you may want to set this preset to "Edit" and adjust the jpeg quality and pixelsize.You can either reduce the pixelsize or the quality to reduce the filesize. Inspect the exported images in Preview to decide if the quality is still good enough, if you adjust the quality slider.