*Preview does not require downloading any software
Resizing Images using Preview on a Mac
Place all images in a folder or on the desktop
- Right-click on the images, or command click to view this display window
- Hover over 'Open With'
- From the drop-down select 'Preview'
- From the drop-down select 640 X 480
- Width and Height pixels
- Resolution 72
- Click 'OK'