After my two posts about image formats and image dimensions for email, I’ve thought that you may be interested in a simple and free software to resize images. Not all the organizations need, can afford or know how to use a professional image editing software as Photoshop or Fireworks, so VSO Image resize will become a great tool for them.
It is a simple, usable, small but powerful tool to resize a picture or a complete folder with its batch mode. And it may be ran integrated with Internet Explorer.

Features:
• Convert between different graphic formats
• Configurable compression/resolution ratio
• Support file formats: Jpeg, gif, bmp, tiff etc
• Support Digital Camera RAW formats: Canon .CR2, Nikon .NEF , .MRW Minolta
• Handle single picture or batch mode
• Customizable templates for renaming files
• You can add your own watermark file
• Reduce size photos perfect for web publishing/share photos by email
• Integrate in windows explorer or works as a stand-alone application
• Fast processing
• Import directly from your memory cards
• Save history of destination folder
• Variable options and settings for advanced users
• Multilingual support
• Optimized for Windows 2000 / XP / Vista
Download link: VSO Image resize
I found it at Kabytes.