GnuThumbnailer

GnuThumbnailer is a thumbnail generator and an image batch processing tool. Create thumbnails which can be used to build a website gallery. The application can also be used to edit multiple photos with a few clicks. Features include create fixed size thumbnails to crop the edges of the images, create fixed size thumbnails which are not cropped instead of cropping and colored borders are added to the thumbnails, create scaled thumbnails and set a maximum width and a maximum height for the thumbnails, flip and rotate images by a user-defined angle, rotate images automatically if they contain EXIF data, colors of images can be overlaid, function can also be used to make images lighter or darker, add a colored or a transparent border to your images, and add a water sign to your pictures.