convert [options …] file [ [options …] file …] [options …] file Image Settings: -adjoin join images into a single multi-image file-affine matrix affine transform matrix-alpha option activate, deactivate, reset, or set the alpha channel-antialias remove pixel-aliasing-authenticate password – decipher image with this password-attenuate value lessen (or intensify) when adding noise to an image-background color …