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4 viewer windows stitched together

nomacs is a free image viewer for windows, linux, and mac systems, which is licensed under the GNU Public License v3. nomacs is small, fast and 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).

Please use the Report Bug menu entry to report a bug or request a feature. We will appreciate your feedback!


nomacs 0.3.2

May 15, 2012 : 16:05

today we have released version 0.3.2 as you can see in the version number, this is just a minor update which fixes some bugs. additionally we were able to speed up the file indexing on windows (folders with more than 30 000 files are now indexed in 200 ms compared to 2.5 sec). two new features include a percent option in the resize dialog (for those who are lazy in mental arithmetics) and a chinese translation.

– the nomacs team

GSoC Projects

May 10, 2012 : 11:17

nomacs has been granted two slots from GSoC. Hence, two students will be working on HDR imaging and the RAW loader during the summer. Take a look at the GSoC project page for further details

– the nomacs team

GSoC naw

March 24, 2012 : 21:21

we want to thank all the students that are interested in nomacs and currently applying for GSoC. looking forward for the upcoming applications. if in the near future response times are slightly increasing it has something to do with nomacs around the world.

– the nomacs team

Google Summer of Code

March 19, 2012 : 09:38

we have been accepted for Google Summer of Code. If you are interested in supporting nomacs — and at the same time — earning money… take a look at our ideas page.

– the nomacs teams

nomacs 0.3.0 and the operating systems

March 6, 2012 : 13:15

thanks to petr and elbert we now support additional and ancient operating systems. new in our list are Fedora 15 & 16 and believe it or not OS/2 (so you can view images on ATMs now? : )

– the nomacs

nomacs 0.3.0

March 4, 2012 : 12:32

today we’ve released nomacs 0.3.0 for all supported operating systems (windows, ubuntu, openSUSE and mac OS). take a look at the download page for more details…

– the nomacs team

nomacs 0.3.0 is out

March 2, 2012 : 17:58

today the official 0.3.0 nomacs was released. For now its just windows, ubuntu will be released tomorrow and all versions for other OS need a bit more time.

new features include:

  • Open with dialog
  • Image cropping
  • Resize image
  • Pseudo Color function
  • Frameless windows
  • Translations
  • Basic support for stereo images (*.mpo, *.jps, *.pns)
  • …and we polished our GUI

In addition we did some under the hood improvements

  • Full unicode support for filenames
  • Start-up time improved
  • Performance improvements for images loaded from network drives

so you see, we did a lot in the last two months : )
enjoy the new nomacs

- the nomacs team

nomacs translations

February 29, 2012 : 14:40

we are about to release nomacs 0.2.5 (in the next few days). in addition to several bugfixes, performance improvements and features, nomacs will be shipped with translations. currently english, german and russian (thanks to dadatamada) are supported. if you want the new viewer to talk with you in your language you could translate the current UI at translate.nomacs.org.

– the nomacs team

ubuntu launchpad repository

January 30, 2012 : 15:16

we have create launchpad repositories for Ubuntu. This will make it easier to install nomacs for Ubuntu and to keep it up-to-date.
To install nomacs using this repository you have to add “ppa:nomacs/stable” to your list. You can do this by typing
sudo add-apt-repository ppa:nomacs/stable
in a console. After updating the repositories you should be able to install nomacs using your favorite package manager

You have also the possibility to install the daily builds of nomacs by adding “ppa:nomacs/daily” but these builds are considered as experimental.

Have fun!
– the nomacs team

ubuntu update

January 19, 2012 : 10:05

today is soon!
we have now added the nomacs 0.2.3 packages for ubuntu (32 and 64 bit). you can download them from our sourceforge project page.

– the nomacs team

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