nomacs 3.22.3 Free Portable Download for Windows
nomacs is a free, open-source image viewer built to handle virtually any picture format you throw at it — from everyday JPEGs and PNGs to RAW camera files and layered PSDs. Its clean, minimal interface hides a toolset that goes well beyond simple viewing, making it a solid daily driver for photographers, designers, and anyone juggling large image libraries.
Beyond plain viewing, nomacs packs in metadata inspection, a thumbnail browser panel, folder syncing, and even the ability to preview images stored inside ZIP or Microsoft Office archives. Whether you’re sorting through a shoot, comparing two shots side by side, or just want a faster alternative to your OS default viewer, nomacs keeps the experience lightweight and surprisingly deep.
In This Post
Technical Details
| Software Name | nomacs |
|---|---|
| Version | 3.22.3 |
| License | Open Source (GPLv3) |
| File Size | 45.1 MB |
| OS Support | Windows |
| Language | English, German, French, and others |
| Developer | nomacs Team |
| Homepage | https://nomacs.org/ |
| Changelogurl | https://github.com/nomacs/nomacs/releases |
| Last Updated | September 3, 2026 |
Notable Features
- Universal Image Format Support: Opens all common image formats including RAW camera files and PSD layers, so you rarely need a second viewer. A solid all-in-one replacement for your OS default image app.
- Semi-Transparent Info Panels: Floating widgets display thumbnails, EXIF metadata, and a live histogram overlaid on the current image. Toggle them off when you want a distraction-free canvas.
- Archive Browsing: Browse and preview images contained inside ZIP archives and Microsoft Office documents without extracting first. Useful for working with packaged asset bundles.
- Built-in Image Adjustments: Fine-tune brightness, contrast, saturation, hue, gamma, and exposure directly in the viewer. A pseudo-color function also lets you create false-color visualizations.
- Multi-Instance Synchronization: Open multiple nomacs windows and sync their zoom and pan positions to compare shots pixel-for-pixel. Overlay images at different opacities to spot subtle differences.
- Folder Filtering and Caching: Apply string or regex filename filters inside a directory to narrow down what gets displayed. Activating the image cacher makes switching between shots near-instant.
- Side Notes for Files: Attach personal notes directly to individual images so annotations travel with the file across sessions. Handy for review passes or cataloging work.
What’s New in Latest Version
- Security updates in libraries used by nomacs.
How to Install
Installation Steps
- Click the download button above and choose either the standard installer or the portable archive.
- If using the installer, double-click the.msi file; if using the portable version, extract the ZIP to any folder of your choice.
- Launch nomacs from the Start menu, desktop shortcut, or the extracted folder and start opening your images.
Compatibility: Runs on Windows 7 and later. Portable variant requires no installation and can be run from a USB drive.
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