PicuSizer is a free, powerful and easy-to-use program to batch convert and write images in a large variety of formats. PicuSizer supports many image formats including formats like GIF, JPEG, JPEG-2000, PNG, BMP. Clicking the right mouse button while the mouse cursor is over the image you will convert all images to chosen format or, alternatively get pop-up menu. It contains various items for controlling how the image in that view is displayed. Also for the "Power-User", we recommend using this image converter. It allows you to easily add thousands of images to be converted with a single click.