ImgTransformer

ImgTransformer is a free tool designed to help you resize, convert, and edit images easily and all from the same interface. This application supports over 30 different formats so you won't have any compatibility issues with your pictures and you can edit them without any problems.

In addition to changing the size and image format, the application also lets you edit the color, resolution, brightness, and contrast of the pictures. You can also rotate them and, once finished, save them in 18 different formats.

ImgTransformer can also add watermarks to your images to make sure you always get credit for them, even if you share them online, where they could be copied without your permission.

Another nice feature of this program is that it integrates into the Windows context menu to make it even easier to edit your images. This way, you don't even have to access the program; instead, you can use ImgTransformer with a quick right click on your image files.