I really use this one a lot, so I figured I should share this one with you, because you’ll surely find it very useful.
It’s very easy to use, it is smart and IT’S FREE ! and also free of malware and such.
You can get it from http://www.fookes.com/ezthumbs/
Easy Thumbnails is a popular free Windows utility for creating accurate thumbnail images and scaled-down/up copies from a wide range of popular picture formats. An elegant interface makes it a snap to find your images and select them for processing individually, in groups, or in whole folders, using a simple file selector and built-in image viewer. You can use slider controls to rotate images and adjust their contrast, brightness, sharpness and quality, and check out the results with the built-in viewer.
Thumbnails can be created in any existing folder or a new folder, and you can identify them clearly by adding a prefix or suffix to their filename. If you’re an image-processing enthusiast, you’ll enjoy having a choice of eleven resampling filters for the best possible results. You can convert small batches of images inside Windows Explorer from the File menu or with a right-click of the mouse, display thumbnails in your browser, and even take advantage of command-line switches to generate thumbnails seamlessly from other programs. You can also save your thumbnails to a Web page using a HTML template that you can easily customize to create your own layouts, and there’s helpful documentation that includes full instructions and some useful tips.