This application is very useful to view all kind of image types and to edit them. It has a lot of useful editing features for a free software. You can choose the unit of measurement between pixels, inches and centimeters. Also, you can undo and redo the previous actions. You can rotate, flip, resize or get a canvas portion of your image.
Paint.NET can work with layers, duplicate the existing layers or even import from an external file. You can adjust the brightness and contrast, curves, HUE and saturation, invert the colors or posterize.
It has plenty of useful effects that are available to apply easily: artistic, blur, distort, noise, render or stylize. Can manage fonts and has an interface available in many languages.
paint.net is licensed as freeware for PC or laptop with Windows 32 bit and 64 bit operating system. It is in photo effects category and is available to all software users as a free download.