nomacs

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About

nomacs is ranked #8 of 35 in photo viewer software on Inferse. It runs on Linux, macOS, Windows. There is a free plan.

Compared on photo viewer software

Free plan: Yesnomacs.org

Facts

Product: nomacs is a free, open-source image viewer for viewing common image formats, including RAW and PSD images.nomacs.org · 2 Oct 2026
Image information: Semi-transparent widgets can display thumbnails, metadata, and histograms; users can add notes to images.nomacs.org · 2 Oct 2026
File browsing: nomacs can browse images in ZIP or MS Office files, show a folder thumbnail preview, and filter filenames by text or regular expression.nomacs.org · 2 Oct 2026
Editing: Image adjustments include brightness, contrast, saturation, hue, gamma, and exposure, as well as pseudo-color false-color images.nomacs.org · 2 Oct 2026
Image comparison: Multiple nomacs instances can synchronize panning and zooming, and images can be overlaid at different opacity for comparison.nomacs.org · 2 Oct 2026
Formats: The documented format support depends partly on Qt image plugins, KImageFormats, and optional build features such as ENABLE_RAW and ENABLE_TIFF.nomacs.org · 2 Oct 2026
Downloads: The installation page lists Windows 64-bit installer and portable packages, Linux packages and Flatpak/AppImage, and macOS arm64 and x86_64 builds.nomacs.org · 2 Oct 2026
Other supported systems: The introduction also lists FreeBSD and OS/2 as supported platforms.nomacs.org · 2 Oct 2026
License and use: nomacs is licensed under GNU General Public License v3 and is free for private and commercial use.nomacs.org · 2 Oct 2026
Integrations: The FAQ describes its original purpose as helping image-processing users compare images at different processing stages.nomacs.org · 2 Oct 2026
Support: The documentation directs users to the project tracker to report bugs or request features, and invites contributions such as translations, ports, and code.nomacs.org · 2 Oct 2026
Windows compatibility: The FAQ says Windows XP and Vista are not supported in future development since nomacs 3.0, though version 2.4.6 can be used on those systems.nomacs.org · 2 Oct 2026