JPEG and PNG Stripper is a freeware to remove metadata from JPEG and PNG image files. It does not impacts the image quality, and in fact helps to reduce size of images. It comes with a simple interface in which you can drag and drop the image files for which you want to remove the EXIF data. Removing such metadata is helpful before you share your photos with other people, so that they cannot find hidden metadata in files.
JPEG and PNG Stripper works with JPG, JPEG, JFIF, and PNG files. It also comes with command line support. You can specify complete folder path on command line to remove metadata of all images in a folder.