Paint.NET is a free image and photo manipulation application designed to be used on computers that run Windows. Paint.NET supports layers, unlimited undo, special effects, and a wide variety of useful and powerful tools. It started development as an undergraduate college senior design project mentored by Microsoft, and is currently being maintained by some of the alumni that originally worked on it. Originally intended as a free replacement for the MS Paint software that comes with Windows, it has grown into a powerful yet simple tool for photo and image editing.
Some key features of Paint.NET are:
Every feature and user interface element has been designed to be immediately intuitive and easily learned without assistance. Paint.NET is also designed to be immediately familiar to users of MS Paint and Adobe Photoshop.
Layers allow you to compose one complete image from a stack of other images that are blended together.
Every action you perform on an image is recorded in the History window. The number of actions you can store in the History Window is only limited by available disk space and memory.
The following file formats are supported: PNG, JPEG, BMP, GIF, TGA, DDS, and TIFF. The native Paint.NET image type is PDN, which preserves the layer structure.
You can apply many special effects and adjustments to your image.
Paint.NET is fully optimized for the latest in processor technology, enabling dramatic performance improvements when working with large or multiple images.
Paint.NET v3.5 has been enhanced for the latest Windows release. Jump List support provides quick access to the list of recent images, and the user interface has been enhanced to take advantage of Aero and Glass. The font manager for the Text tool has been rewritten to use the new DirectWrite component, which greatly improves quality and performance.
Paint.NET supports plug-ins that add new effects, adjustments, and file format support.
Paint.NET is provided for no cost with generous licensing terms. If you choose, you can support continued development of Paint.NET with a donation.