Plugins - ActsAsImage
Add to favoritesThis plugin takes a simple approach to saving images. It will scale images and save them to the file system, but it can’t be used to save other types of files. It can handle all the types of images that RMagick can, and will differentiate between normal images and animations, saving them as JPEG and GIF respectively. You can specify as many different sizes as you want and whether they will be scaled or cropped.
http://sargon.interinter.net/acts_as_image/
http://nimrod.interinter.net/plugins/trunk/acts_as_image
Rails' (MIT)
Assets
Rick Olson is doing a rewrite of actsas_attachment called "Attachment Fu" that does this and much more. See http://svn.techno-weenie.net/projects/plugins/attachmentfu/