I don't know anything about having it automatically resized. I'm sure El Orans will see this in a few hours.
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It's hidden in the export function. You can find "Export Picture to Folder" under the "File" menu. It gives you the option to resize while exporting.catherine96821:I don't think Picasa resizes that I know of...
Don't use the slider bar -- it only goes down to 320 pixels. TYPE 100 or 150 or whatever into the box to the left. I just verified that it works with Picasa2, even for a reduction to 15x15 pixels. Probably works the same with earlier editions. Sample attached.catherine96821:But Charlie, it won't go that small...that is what has me stumped. Poor Alcina has tried to teach me this stuff, I have a block with cs2.