ImgCvrt is an application and contextual menu for converting image file formats. Converted images have the same name as the original, with the appropriate file extension, and saved in the same directory as the original. (Supported file formats are determined by Quicktime.) Universal Binary, Mac OS X 10.4 and above.
ImgCvrt is part of the Limit Point Software Utilities Bundle : http://www.limit-point.com/Utilities.html. Purchase a Utilities password to activate all the utilities, including ImgCvrt. Upgrades are always free, new utilities are always included!
ImgCvrt initially runs for about ten days without a permanent password.