The best and quickest way to remove watermark from digital photos is by using a photo editing software. There are a lot of free and paid picture editing softwares like Adobe Photoshop, Jihosoft Photo Eraser, Super Eraser, Webinpaint etc. All these software come with watermark remover feature which will help you in removing the watermark from your photos in a quick and easy manner. You can learn more about these software tools in this article: How to remove watermark, logo, datestamp and text from photos. There you will get the step by step guide to use these tools efficiently and easily.