Alternatives to PhotoDemon
A free, portable, open-source photo editor for Windows that runs without installation. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
PhotoDemon
A free, portable, open-source photo editor for Windows that runs without installation.
Replacements
Listings that take over the same core job as PhotoDemon.
Paint.NET
A fast Windows image editor that sits between Microsoft Paint and a full photo suite.
Paint.NET is a free but closed-source Windows editor with layers, GPU-accelerated effects and a large plugin library, installed rather than portable.
GIMP
The long-running free image editor for photo retouching, compositing and general pixel work.
GIMP is a free GPL editor for Windows, macOS and Linux with full layers, masks, paths and scripting, larger and with its own interface conventions.
Pinta
A small painting and image editor modelled on Paint.NET 3, and the closest thing to it on macOS and Linux.
Pinta is an MIT-licensed Paint.NET-style editor that runs on Windows, macOS and Linux, with layers and history but fewer tools.
LazPaint
A free cross-platform image editor with raster and vector layers, similar to Paint.NET.
LazPaint is a free open-source editor for Windows, macOS and Linux with raster and vector layers, with fewer advanced features.
PhotoFlare
Simple cross-platform image editor for quick edits and batch processing.
PhotoFlare is a free GPL-3.0 cross-platform editor with built-in batch processing for quick edits, but no layers or non-destructive editing.
Photopea
Browser-based image editor that opens Photoshop, XD and Sketch files.
Photopea runs in the browser with no installation and opens PSD files, but it is closed source and ad-supported unless paid.
miniPaint
Open-source online image editor with layers and filters that runs entirely in the browser.
miniPaint is an MIT-licensed browser editor with layers and filters that needs no installation and can be self-hosted, with fewer tools.
Also worth comparing
These listings name PhotoDemon as their own alternative, so the relationship runs both ways.
Acorn
A one-time-purchase image editor for macOS covering photo editing, painting, text and graphics.
PhotoDemon is a free, portable open-source editor with batch processing and macros, but it runs only on Windows rather than macOS.
Affinity Photo 2
Raster photo editor for retouching, compositing and RAW processing.
PhotoDemon is free, open source and portable on Windows, opens PSD files and has over 200 tools, but is mainly maintained by a single developer.
Cleanup.pictures
A web tool that removes unwanted objects, people, text and defects from photos using AI inpainting.
PhotoDemon is a free, open-source, portable Windows editor with content-aware fill among over 200 tools, so images are edited locally rather than uploaded.
Microsoft Paint
Simple image editing and drawing app for Windows, distributed through the Microsoft Store.
PhotoDemon is a free, open-source portable Windows editor with over 200 tools, macros and batch processing, runnable from a USB stick without installing.
Similar software
Related functionality, not a direct replacement.
Converseen
A free batch image converter and resizer for Windows, Linux, macOS and FreeBSD.
Krita
A free digital painting program built for illustrators, with over a hundred brushes ready to use.
Upscayl
Enlarges low-resolution images with AI models running on your own GPU, in a plain drag-and-drop window.