Prefix or suffix the files (useful for thumbnailing).
Convert to multiple formats (JPEG, GIF, PNG, TIFF, PSD, etc...).
Change resolution, with or without aspect ratio.
Limit the target size, allowing to choose the best resolution.
Change program priority to a lower state, allowing your computer to keep it's reactivity during a conversion.
Add files, folders, automatically add subfolders, use drag&drop from Windows Explorer.
Convert pictures in their own folder or in a targer folder.
Convert and send by email (With the KB limite, your emails will always be light and successfully delivered)
Add a copyright on each picture
1.70 : Speed optimization, new design
1.60 : Windows Vista compatible.
1.50 : SimpleSizer is officially available.