This is a filetype plugin for Paint.NET that enables both loading and saving of Photoshop .PSD files.
The plugin can load and save the following features of Adobe Photoshop .PSD files with no loss of fidelity:
Color depth of 8 bits per channel
Raster images with no use of vector features
Layers, using the common blend modes
(Optional) RLE compression More Info »
In this way, you can use the plugin to exchange work between Paint.NET and other programs. This is especially important since Paint.NET preserves layers only for the default .PDN format — other file formats are flattened on save. The .PSD file format thus offers the best way to preserve layers when editing an image in multiple graphics programs.
The Photoshop .PSD file format is a de facto standard in the graphics industry. In addition to the Adobe Creative Suite, many non-Adobe programs can also read the PSD format: Autodesk Sketchbook, 3ds Max, The GIMP, Microsoft Expression Design, etc.