Batch scale images
Scaling is the bread and butter of image editing. With scaling you can create thumbnails for your website, decrease the file size of your photos, or resize your images to fit a certain size. With ResizeMe, scaling many images at once is a piece of cake, and this tutorial will show you how.
Requires Mac OS X 10.5 Leopard or later. Snow Leopard ready.
Step 1: Drag in images
Download and install ResizeMe if you haven't already done so. In your Applications folder, launch ResizeMe. Drag in the pictures that you want to scale into ResizeMe's file table.
Step 2: Select Scale & Resize
Select Scale & Resize from the operations pop-up menu.
Step 3: Set new dimensions
Choose whether you want to resize the width, height or both from the Scale pop-up menu. Enter the new dimensions for your images in the Width and Height boxes.
If you don't want images smaller than the new dimensions to be scaled up, select "Only scale down".
If you want to resize your images relative to the original size, select "percent" in the pop-up menus to the right of the Width and Height boxes.
If you want to resize only the width or height, select "width" or "height" from the Scale pop-up menu, respectively. You can keep the original proportions of the image in tact by selecting "Keep Aspect Ratio".