Rapid Resize makes resizing images a snap! Especially for iOS developers and designers it's a great time-saver: It lets you define multiple device-specific versions, incorporate scaling factors, process batches of images with a single action, and apply smart file naming.
• Versions: You use versions to apply scaling factors and smart file naming, as well as to choose file types. For each image that you drag and drop on Rapid Resize, a new image is created for each defined version. This makes it easier and quicker to create multiple versions of your images, for example high-resolution versions and normal versions.
• Smart file naming: Rapid Resize lets you specify for each version the shape of its filenames, that is: how those filenames should be generated, based on the image's properties. For example, you can specify that a high-resolution version's filename should consist of the original image's filename, the new image size, and "@2x".