old news

Tiny Planet for Android

February 22, 2016 : 13:49

Fabian integrated the Tiny Planet functionality of nomacs into an Android App. With Tiny Planet Maker you can create nice tiny planets from 360° panoramic photographs (or regular photographs).
Get it on Google PlayTiny Planet Maker - UI

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James Bomb

December 3, 2015 : 09:43

here is a small javascript game we coded years ago. enjoy : )

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nomacs 3.0 Beta

November 5, 2015 : 18:33

nomacs 3.0 Beta is available here (Windows installer only). We would love to get your feedback below or in our bug tracker.

NOTE: this is Beta, so we do not recommend using it in a productive system!


Support nomacs

September 30, 2015 : 14:36

nomacs 3 will be released with a brand new & shiny installer. Therefore and for other reasons we will leave sourceforge. To guarantee fast downloads, we will rent a webspace which costs around 50€ (~56.085$).
Now we face two options:

  1. Google AdSense which adds ads to this webpage resulting in an ugly page
  2. You donate

If you donate 50€ until the end of 2015, this page keeps its simple white UI and no ads are added until the end of 2016. There are three ways how to keep an ad-free interface:

  1. a rich contributor donates 50€
  2. every 100th download 2€ are donated
  3. every 100th visitor donates 50 cents

be part of it:

thank you
— the nomacs team

[UPDATE]: we have reached our goal of 50€ – thanks to all donators! As promised, nomacs.org will remain free from ads and nomacs 3.0 will be hosted on a new server which drastically improves the update process.

Of course we will still appreciate any donations (we are far from being a big corp : )


Metadata HUD

April 15, 2015 : 13:19

We have upgraded the Metadata HUD panel. At a first glance it looks pretty much as in previous versions.

Metadata HUDIf you right click the panel, there will be a few new options:

Metadata Panel - Context MenuSimilar to the Thumbnail preview, you can choose where to display the panel. If the panel is in Horizontal Layout (Top or Bottom) you can choose the number of columns. If the data does not fit to the current window size, a scroll bar will appear.

But the most important improvement is the key selection. Up to now you were only able to select pre-defined exif keys. Since exif values are pretty dynamic, you can now choose an image which has special entries. If you click Change Entries, this dialog will appear:

key selectionThe dialog lists all exif entries of the currently loaded image. Checking an entry there will add the entry to the metadata HUD.


Batch Processing

March 21, 2015 : 13:06

nomacs supports batch processing since version 2.4. You can open the bach processing from the Menu > Tools > Batch Processing. Currently there are four different processing modes (Copy/Rename | Image Format Conversion | Image Resize | Transforming).

First you can choose the directory and select the files you want to process. File selection is similar to the thumbnail preview (select multiple files using CTRL, hold SHIFT to select files consecutively or hit CTRL+A to select all files of a folder). You can additionally filter a subset using search terms or regular expressions (in the example below all files are chosen which start with a lower case character). After selecting the files to be processed you can click the Icon Add Files to the File List. If you open the File List Tab, you can also drop multiple folders to select their files for processing. Having selected the files to be processed, you can choose an output directory. The output panel allows you to choose the old filename or rename all processed files. The screenshot shows a file conversion where 87 files are converted to png.


The Output panel allows you to choose an output directory and rename/convert files. You can choose a custom filename. Do not forget to add a sequence number such that the filenames are still unique. The filename preview picks a selected image and shows the old and the new filename accordingly. If input and output directory are the same, images will be renamed in place. Otherwise the images are copied and renamed. This action will not change the image encoding.

the output panel
the output panel

Image Conversion

If you want to convert images to a specific output format (e.g. PNG) you can change the Keep Extension drop down to Convert To. Then select your preferred format. You can choose any format which is supported by nomacs.

batch convert images
batch convert images


Click the + next to Resize/Transform to apply an image transform. If you e.g. want to downsample all images of a folder, you can choose Long Side in the resize panel. Then enter the desired side length in pixel. This option will resize the image such that the width of panorama images or the height of portrait images will be set to the desired pixel length. If you check Shrink Only images which have a lower long side than the desired length will not be resized.

batch resize
batch resize

The Transform panel allows you to rotate or flip all images. The gray text next to the panel title indicates if a panel is active or not. The example below shows a configuration which resizes all images by 50% and then rotates them by 180°.

batch transform
batch transform


After you configured the batch processing according to your needs you can hit OK. A progress bar will appear which indicates the percentage of images already processed. If you notice a wrong configuration, you can cancel the processing. All images processed will stay the same then but the processing is stopped immediately.

processing images
processing images

All processing actions are logged. Choose Show Log to see the status of the processing. You can see the status of every batch module and check if it was processed successfully. Please check the batch configuration before Processing especially if you check Overwrite Existing files since these actions cannot be reverted.

log file
log file


Overview Panel (Zooming)

March 16, 2015 : 17:15

The Overview Panel (Menu > Panels > Overview) enhances zoom and pan. The blue rectangle shows the current viewing area. You can pan to a specific location by dragging this rectangle to the desired position. The scrollbar at the bottom allows you to zoom. If you want to zoom to a desired factor (e.g. 600 %) you can mark and replace the text accordingly.

Overview Panel
Overview Panel

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GSoC 2015

March 3, 2015 : 10:10

nomacs was not accepted for GSoC 2015. We would like to thank all students who were willing to contribute to nomacs. But don’t forget, it’s open source – so you are always welcome to contribute : )

– the nomacs team

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But which image format should I take?

February 20, 2015 : 18:59

Since we see a lot of people choosing the wrong image formats on a daily basis, we have created a short cheat sheet for you. Though JPEG is probably the easiest way to archive your pictures, there are several incentives to choose another image format depending on the image content or purpose. (You can also download the cheat sheet)

Image formats for photos
Image formats for photos

Image formats for illustrations
Image formats for illustrations

– the nomacs team

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Welcome to the Image Lounge

February 20, 2015 : 11:58

copy-header.pngtake a close look at your browser’s address bar : )

– the nomacs team

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Windows 10

February 3, 2015 : 15:12

We have tested nomacs on windows 10. Everything works out as expected, except that the Frameless View seems to be obsolete since Microsoft removed the window frames.

— the nomacs team

nomacs running on windows 10
nomacs running on windows 10


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Want to Support nomacs?

December 17, 2014 : 18:15

we would need your help for increasing the support of nomacs on different OS:

  • OSX Build in addition to Petr’s MacPort packages we would love to distribute dmgs of nomacs.
  • Linux Plugins we are seeking for someone who can help us with the packaging of plugins for Linux.

If you have experience in any of these fields and want to support us, you can leave a reply to this post or write us an e-mail (developers@nomacs.org).

– the nomacs team

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How to create a Mosaic Image

November 17, 2014 : 16:42

With nomacs you can easily cerate a Mosaic image. The tool (Tools > Mosaic Image) allows to create images that are composed of other images. For detailed instruction, see the screenshots below





November 17, 2014 : 16:33

With the synchronization it is possible that multiple viewers perform the same action (like panning, zooming, etc.). This feature is useful when comparing two images.

Synchronization on the same computer

For synchronization on the same computer at least two instances of nomacs have to run. Via the “Sync”-Menu it is possible to connect to all viewers or a specific viewer can be chosen by selecting the image title of this viewer. Additionally it is possible to connect two viewers by keeping the CTRL and ALT key pressed and drag from the image of one viewer to the other. For actions which should be performed on all connected instances the ALT key has to be kept pressed (e.g. hold the ALT key pressed and use the mouse wheel for zooming on all connected viewers).

Possible actions which can be performed:

  • Panning ALT+mouse
  • Zooming ALT+mouse
  • load next/previous File (ALT+right resp. ALT+left)
  • synchronize zoom level and position in the image with CTRL+D
  • overlay the two images and change the opacity of one image with CTRL+TAB
  • arrange synchronized viewers with CTRL+SHIFT+TAB

Synchronization in the local network (LAN)

First you have to enable “network sync” in the network preferences of nomacs on all computers  you want to use. To synchronize viewers via the local network one nomacs has to start the server using the menu. The viewer on the other computer can then connect to the server.  Additional to the actions on the same computer (see above) images can also be sent over the network by pressing ALT+I (or using the menu:  Sync -> Send Image).

In the settings dialog actions can be forbidden for all clients (see Settings-Network). So you can forbid a client e.g. to zoom into your image and/or to send you new images.

Note: If a server connects to another server in the network, all clients of this server disconnect and establish a new connection to the target server. Also the server of the current viewer is stopped.

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Image Notes

November 13, 2014 : 21:16

image notes
image notes
We have recently added a new feature called image notes. A transparent widget appears in the bottom left corner if you click Panels > Image Notes which displays text stored in the image metadata (Exif.Image.ImageDescription). Thus, other software such as Photoshop can read these notes. To add or edit notes, simply click into the widget and start typing.


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