The only necessary step to do this job is to choose the images you want to convert and select the output format and size. You can add as many pictures as you want by using the option Add Picture.
The output format can be JPG, PNG, BMP, TIFF or GIF.
After this, in a few seconds, you'll have all images in the new size and format stored in the chosen folder. Free Photo Converter is easy, fast and free.