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.
Cost / License
- Free
- Open Source
Application types
EUPlatforms
- Mac
- Windows
- Linux
- FreeBSD
- Flathub
Features
Properties
- Lightweight
- Customizable
- Privacy focused
Features
- Multiplatform
- Image browser
- Crop images
- Support for SVG
- Ad-free
- Portable
- Extensible by Plugins/Extensions
- RAW Photo Editors
- Dark Mode
- No registration required
- Works Offline
- Frameless
- Open PSD files
- Multi panel
- Auto-Refresh
- Built-in editor
- Batch processing
- Image Sharing
Tags
- svg-viewer
- Resize Images
nomacs News & Activities
Recent News
Recent activities
Featured in Lists
These are all the software I use on my windows machine. I am privacy freak. So, I mostly use open source software. …
(in progress) The higher the level - the lower the level of comfort and stability, but higher the level of freedom …
only free, mostly open-source
What is nomacs?
nomacs is a small, fast image viewer able to handle the most common image formats including RAW images. Additionally it is possible to synchronize multiple viewers. A synchronization of viewers running on the same computer or via LAN is possible. It allows to compare images and spot the differences (e.g. schemes of architects to show the progress).
nomacs information
Developed by
Markus Diem, Stefan Fiel and Florian Kleber Licensing
Open Source (GPL-3.0) and Free product.Written in
Rating
Average rating of 4.6Alternatives
96 alternatives listedSupported Languages
- English
AlternativeTo Categories
Photos & Graphics, Web BrowsersGitHub repository
- 2,648 Stars
- 170 Forks
- 282 Open Issues
- Updated
Comments and Reviews
Very complete. Easy, small and simple. One feature to underline is you can print images from it. Strange as it sounds, there's a bunch of good image viewers and editors in linux but astoundingly, many lack that option.
Appears to be discontinued. No release for more than 4 years and open source repository is very quiet.
As of Feb 2025, the repo is quite active but still no new releases (on Github, at least) so you'll need to build from source or use a package manager
Open source, has all the tools that I need from a image viewer, is lightweight, easy to navigate, fast and simple
Very good simplified image editor/cropper. Three requests: 1. pdf cropper ability 2. change the icon.. I am keenly aware of the issues of those struggling with alcohol which is a major epidemic. 3. Thumbnail size options. Thumbnail strip option is too tiny.
so far so good. excellent for laptops that are either lower end or like mine: running on low performance to save battery. the ui is rather similar to imageglass, just runs faster. honestly, everything is better than the built in microsoft viewer.
Works great. Multiplatform is a plus.
I've just tried nomacs on a Mac, and it is unusable as a picture viewer: