PhotoDemon

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Stable (2025.12)	Nightly	Source code
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About PhotoDemon

PhotoDemon is a portable photo editor. It is 100% free and 100% open-source.

1. Overview
2. What makes PhotoDemon unique?
3. Contributing
4. Licensing
5. No LLM / No AI policy

Overview

PhotoDemon provides a comprehensive photo editor in a 22 MB download. It runs on any Windows PC (XP through Win 11) and it does not require installation. You can run it from a USB stick, SD card, or portable drive.

PhotoDemon is open-source and available under a permissive BSD license. Contributors have translated the program into more than a dozen languages.

You can support PhotoDemon's ongoing development through Patreon or with a one-time donation.

New contributions from translators, coders, designers, and enthusiasts are always welcome.

• For information on the latest stable release, visit https://photodemon.org
• To download a nightly build (built from the latest source code), visit https://photodemon.org/download/
• To download PhotoDemon's source code, visit https://github.com/tannerhelland/PhotoDemon

What makes PhotoDemon unique?

Lightweight and completely portable

No installer is provided or required. Aside from a temporary folder – which you can specify in the Tools > Options menu – PhotoDemon leaves no trace on your hard drive. Many users run PhotoDemon from a USB stick or microSD card.

Integrated macro recording and batch processing

Complex editing actions can be recorded as macros (similar to Office software). A built-in batch processor lets you apply macros to entire folders of images.

Usability is paramount

Many open-source photo editors are usability nightmares. PhotoDemon tries not to be. Small touches like real-time effect previews, save/load presets on all tools, unlimited Undo/Redo, customizable hotkeys, mouse wheel and X-button support, and descriptive icons make it fast and easy to use.

Pro-grade features and tools

• Extensive file format support, including Adobe Photoshop (PSD), Corel PaintShop Pro (PSP), GIMP (XCF), and major camera RAW formats
• Advanced multi-layer support, including editable text layers and non-destructive layer modifications
• Color-managed workflow, including support for embedded ICC profiles
• On-canvas tools: digital paintbrushes, clone and pattern brushes, advanced selection tools, interactive gradients, and more
• Adjustment tools: levels, curves, HDR, shadow/highlight recovery, white balance, and many more
• Filters and effects: perspective correction, edge enhancement, noise removal, content-aware fill and resize, unsharp masking, gradient and palette mapping, and many more
• More than 200 tools are provided in the current build.

Limitations

• PhotoDemon isn't designed for operating systems other than Microsoft Windows. A compatibility layer like Wine may allow it to work on macOS, Linux, or BSD systems, but these configurations are not officially supported.
• Due to its portable nature, PhotoDemon is only available as a 32-bit application. (This means it cannot load or save images larger than ~2 GB in size.)

Recent changes and updates

For a full list of recent improvements, visit the project's commit log.

Contributing

Ongoing PhotoDemon development is made possible by donations from users.

My Patreon campaign is one way to donate. I am also extremely grateful for one-time donations. A secure donation page is available at photodemon.org/donate. Thank you!

If you can contribute in other ways (language translations, bug reports, pull requests, etc), please create a new issue at GitHub. A full list of (wonderful!) contributors is available in AUTHORS.md.

Licensing

PhotoDemon is BSD-licensed. This allows you to use its source code in any application, commercial or otherwise, if you supply proper attribution. Proper attribution includes a notice of copyright and disclaimer of warranty.

PhotoDemon uses some 3rd-party libraries. These libraries are found in the /App/PhotoDemon/Plugins folder. These libraries have their own licenses, separate from PhotoDemon.

Full licensing details are available in LICENSE.md.

No LLM / No AI policy

Added June 2026

As a solo developer of this completely free hobby project, I have a strict No LLM / No "AI" Policy, with one exception. My No LLM / No "AI" Policy applies to everything I have created for PhotoDemon over the past 25+ years: all source code (including comments), all documentation (coming later this year!), anything I've written about PhotoDemon (including photodemon.org), bug-fixing, brainstorming, and all my other contributions to this project.

My only exception to the No LLM / No "AI" Policy involves translating PhotoDemon's UI into other languages. All of PhotoDemon's non-English language files are contributed by unpaid volunteers. I do not have the time or knowledge to audit these language files, nor do I believe in gatekeeping PhotoDemon from non-English users.

Because of this, I cannot guarantee that no LLM or "AI" tools were used in the generation of PhotoDemon's non-English language files. I also do not require translation volunteers to sign onto my own No LLM / No "AI" Policy. I am grateful to everyone who has helped translate PhotoDemon's (enormous) language requirements, and where possible, I would simply ask contributors to consider the ethical trade-offs of LLM / "AI" tools prior to using them.

Thank you to everyone who has helped me bring PhotoDemon to so many users over the years. Now more than ever, it feels especially important to provide Windows users with free, open-source, non-advertising, non-spyware tools, particularly when those tools are designed for (and by) fellow artists.