EasyPic

EasyPic is clearly not intended for massive picture resizing, as it works with only one file at a time. However, it's a perfect tool for occasional resizing, like creating an avatar for your IM client or publishing a downsized picture to your blog.

Unlike similar tools, EasyPic doesn't use size presets; it simply enables you to enter the new size values, maintaining aspect ratio automatically. It also allows you to add a watermark to the resized picture, although only in seven different positions with no customizing possibilities.

Once resized, you can save the picture in JPG, BMP or GIF and also save settings for future use, which makes it a bit easier for working with more than one file.