Mass Watermark is described as 'The easiest and most efficient way to protect your digital images. With Mass Watermark you can overlay great looking Text or Image Watermarks on your photos with a few mouse clicks. With a the simple User Friendly Interface, Quality Antialiased Watermarks' and is an app. There are more than 10 alternatives to Mass Watermark for a variety of platforms, including Windows, Mac, Android, F-Droid and Flatpak apps. The best Mass Watermark alternative is Easy Watermark, which is both free and Open Source. Other great apps like Mass Watermark are PicGuard, Watermarking, PreviewMaker and uMark.