What Paint.NET does
Paint.NET 5.1.12 is dotPDN's Windows image editor. The Classic edition is free to use, including commercially; the Microsoft Store edition is paid. The publisher describes the functionality as the same apart from fully automatic Store updating. This is proprietary software: the GitHub release repository distributes packages and is not an open-source licence for the application.
The primary x64 Classic installer ZIP must be opened to run its contained setup program. The separately listed portable ZIP contains the application instead. Choose an installer for normal installed use, or the portable bundle when you want to manage an extracted copy and its updates. A portable copy can still create settings, recent-file information and editing-history files; it is not a promise of trace-free operation.
The documented OS baseline is Windows 10 version 21H2, Windows 11 or Windows Server 2022 on a 64-bit CPU. The application includes its required.NET runtime, so it does not require a separately staged.NET installer. The publisher's supported hardware baseline includes AVX2 for Intel/AMD CPUs, a Direct3D 11 GPU and an SSD, while documenting slower fallback behavior on some older hardware.
Keep a PDN working file when layers matter and export a separate delivery image. Third-party effect and file-type plug-ins have their own compatibility and permission requirements; obtain them through the publisher's forum or the authors' linked sources. The two SHA-256 references match official release metadata checked on 11 September 2026. No setup execution, signature inspection, plug-in test or performance measurement was performed.
