From Ultimate Multi-Media.com:
Utility for viewing and generating thumbnails from your image folders. Supports the following formats: BMP, GIF, JPEG, ICO, WMF, EMF, PNG, PCX, TIFF, PSD. Features: easy-to-use interface, fullscreen view, shows image file information, allows you to copy thumbnails to the clipboard and save them in BMP, GIF, JPEG, PNG, TIFF, PCX formats, to customize thumbnail sizes and to use anti-aliasing mode. It supports folder bookmarks, has generator/designer of HTML pages containing thumbnails and HTML preview window, file filters and the folder browser, similar to Windows Explorer.