MariusSoft
http://www.mariussoft.com/products.aspx?Product=BulkImageResizer

Quickly and easily convert multiple images at the same time

MariusSoft LLC - MariusSoft was created with one simple yet profound concept in mind: create quality software that can help business integrate data, security, and ease of use in one package.

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Bulk Image Resizer allows you to quickly and easily convert multiple images at the same time. The resizing engine supports the most popular formats and features high quality image resizing. The resizer will make any photo email friendly so you can email, upload, view, and move your images faster then ever. MariusSoft Bulk Image Resizer can convert JPEG, JPG, BMP, GIF, TIF, TIFF, PNG formats with no image size limitations.