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nomacs - Image Lounge

TU Wien · nomacs.nomacs

nomacs is a free, open source image viewer, which supports multiple platforms. You can use it for viewing all common image formats including RAW and psd images.

nomacs is a free, open source image viewer, which supports multiple platforms. You can use it for viewing all common image formats including RAW and psd images. nomacs features semi-transparent widgets that display additional information such as thumbnails, metadata or histogram. It is able to browse images in zip or MS Office files which can be extracted to a directory. Metadata stored with the image can be displayed and you can add notes to images. A thumbnail preview of the current folder is included as well as a file explorer panel which allows switching between folders. Within a directory you can apply a file filter, so that only images are displayed whose filenames have a certain string or match a regular expression. Activating the cache allows for instantly switching between images. nomacs includes image manipulation methods for adjusting brightness, contrast, saturation, hue, gamma, exposure. It has a pseudo color function which allows creating false color images. A unique feature of nomacs is the synchronization of multiple instances. With this feature you can easily compare images by zooming and/or panning at the exactly same position or even by overlaying them with different opacity. nomacs is licensed under the GNU General Public License v3 and available for Windows, Linux, FreeBSD, Mac, and OS/2. It is free for private and commercial use. If you want to report any bugs or request new features please use our tracker.

winget install --id nomacs.nomacs --exact --source winget

Latest 3.22.0

Release Notes

The first non-beta release of nomacs in quite some time. Thanks to everyone who helped! 🎉 🍾 🍾 🍾 🎉 What’s Changed Since 3.21.1 Highlights

  • Color Management — @scrubbbbs (#1454)
  • Proper HiDPI rendering (1:1 pixels at 100%) — @scrubbbbs (#1382)
  • Much better ZIP archive support — @scrubbbbs (#1314)
  • Faster, lighter thumbnails — @leejuyuu (#1262)
  • Improved comments & ratings — @leejuyuu (#1374, #1357)
  • New Simplified Chinese translation by @sr79368142 (#1449)
  • Translation work from past several years imported from CrowdIn (#1396)
  • Translation project revived on CrowdIn under nomacs-neo (#1396) Shortcuts & Input
  • Shortcut focus and activation fixes — @scrubbbbs (#1256)
  • Keyboard scrolling in thumbnail view — @spaghetti22 (#1448) UI & Theme
  • Theme reliability and animation fixes — @scrubbbbs (#1326, #1291, #1412) Bug Fixes
  • Rendering & animation fixes (pseudocolor, slides, rotation) — @scrubbbbs (#1364, #1466, #1453)
  • Navigation & interaction fixes (HUD input, zoom behavior, history) — @scrubbbbs (#1410, #1418, #1429)
  • File handling fixes (single-file dirs, ZIPs, thumbnails, save prompts) — @leejuyuu, @scrubbbbs (#1386, #1380, #1331, #1404) Packaging & Builds
  • AppImage support and fixes — @scrubbbbs (#1425, #1471, #1472, #1457)
  • Improved plugin loading on Unix — @scrubbbbs (#1350)
  • macOS CI and code signing — @scrubbbbs (#1443, #1470)
  • Windows build updates (Qt 6.9.3, OpenCV 4.12.0) — @novomesk (#1444, #1409) Maintenance
  • Drop Qt5; Qt 6 cleanup — @leejuyuu, @scrubbbbs (#1343, #1347)
  • CMake modernisation — @scrubbbbs, @novomesk (#1367, #1424, #1458)
  • Warnings, formatting, clang-tidy, headers — @scrubbbbs (#1369, #1375, #1405)
  • Translations re-enabled; plugins merged — @scrubbbbs (#1396, #1349) New Contributors
  • @maurolacy (#1385) Full Changelog: https://github.com/nomacs/nomacs/compare/3.21.1...3.22.0 Security Scan Windows zip Windows msi macOS ARM macOS x86_64 Linux AppImage 22.04 Linux AppImage 24.04

Installer type: wix

Architecture Scope Download SHA256
x64 — Download 909331028C43CF95F9ABC437F464DD8012B1B70B2AEC3FEBF8028B90B634498B

Details

Homepage
https://nomacs.org/
License
GPL-3.0
Publisher
TU Wien
Support
https://github.com/nomacs/nomacs/issues
Copyright
Copyright (C) 2011-2025 Markus Diem, Stefan Fiel, Florian Kleber
Moniker
nomacs

Tags

imagephotopicturereaderviewer

Older versions (1)

3.16.1709
Architecture Scope Type Download SHA256
x64 user inno Download 7780B4676A89CE2B4CFB9943EE8FAEED644B5096F9BF4DD2B87033EBE7FF3620
x64 machine inno Download 7780B4676A89CE2B4CFB9943EE8FAEED644B5096F9BF4DD2B87033EBE7FF3620
x64 machine wix Download 79C189397A916DB566FFADA391E793001EF3BCDE19D32C913DD1E76752895507