PhotoWorker resizes and converts multiple image files at one time. It supports JPEG, GIF, BMP, TIFF, PNG, TGA, PSD, and many more file types. It's very easy to create thumbnails of your photos, extract multiple images from TIFF files, and convert image file types and bit depths. The program also can create shadows for a better look in Web pages, or overlay another image to add watermarks. You have full control over the images you're going to generate with a rich set of conversion options, and because the program is batch-based, it can save you a lot of time without tedious manual editing.
Free to try