Convert, resize and watermark pictures with Kigo Image Converter
Kigo Image Converter is a free program that will help convert one or more pictures between various formats and/or resize them.
It will also let you add a watermark, choosing font family and placement.
The program is easy to use and efficient in what it promises, but it does not support some popular image formats, like Gifs.
It does not also support drop shadow in the watermark or retouching of the images, features one can find in other converters.