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G'MIC : GREYC's Magic for Image Computing

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The G'MIC plug-in for GIMP proposes a set of various filters to apply on your images, including artistic effects, image denoising and enhancement algorithms, 3D renderers, etc.. It is a quite large plug-in, integrating a lot of different effects.

This plug-in is able to :

  • Propose an image preview window for each available filter.
  • Manage multi-layers inputs and outputs. G'MIC defines filters to compose layers or create animations from static images.
  • Update his list of filter definitions from the Internet, so it is able to improve itself over time.
  • Allow any user to add its own custom filters in it, written in the G'MIC language interpreted by the internal image processing engine.

G'MIC has been written by the author of GREYCstoration, a GIMP plug-in dedicated to image denoising and smoothing. All former GREYCstoration algorithms have been improved and integrated into G'MIC.

Latest version of G'MIC is numbered :

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A quite complete overview of available image effects can be seen on the official G'MIC plug-in page.

gmic4gimp_win32.zip1.42 MB
gmic4gimp_linux32.zip853.62 KB
gmic4gimp_linux64.zip797.15 KB
GIMP Version: 
Code License: 


I just upgraded G'Mic and manually created the new filters definition for it, but its not working. My first question is: Has the function been disabled in Windows versions?

The instructions are to place the def file in either your Home or AppData (Application Data) folder. On Linux, it works just fine. On Windows, however, is a different story. I moved the .gmic_def.1332 to almost every folder (including my home and appdata folders) and it still fails to work.

I did search for the solution, with no workable results.

Maybe now you should replace the binary with the lastest ,
Gmic is under constants and fast development.

And last changes may require to update not only the filters with the update button but also the binary

so i suggest you to download the 1.3.3 version , that is also much faster
on this group you may find new of last update in almost real time

I thought I had the latest, according to the update on G'Mic itself. I don't see a newer version on sourceforge, am I missing something?

Yes, actually the has been released yesterday with a great improvement in terms of computation speed, so it is worth trying it.

Concerning your problem, does G'MIC display an error message or something ?

By the way, I've just tested the network update on the last windows version without any errors...


This is the prompt:

Filters update from Internet failed !

Please check your Internet connection. You can
manually update your filters by downloading :

and copy it as the file .gmic_def.1333
in your Home or Application Data folder.

I don't recall what my last version was since I hadn't upgraded in a while, but it was working fine with that version, but not with

Well, I may have an explanation : In, I put the 'curl' executable used to update the filters in a separate folder '_gmic', which must be copied in your GIMP plug-in folder as well.

If you have only copied the binary gmic_gimp.exe, without copying all the archive, then it cannot work.


I put curl.exe in users/plug-ins ( I have edit/preferences/plug-ins pointing at g'mic in a separate folder), and that didn't work. So I moved curl.exe to the same folder as G'Mic, still doesn't work.

Needless to say, the .gmic_def.1333 in my appdata folder isn't prompting the filters to show, either. The interesting thing is, I set parameters on some filters and its the primary reason I am making a little fuss over it now. I want my pre-set filters working again, much like Photocomix's smoothing filter, to give an example.

You need to have a folder '_gmic' (containing curl.exe) in your G'MIC sub-directory (in your GIMP plug-in directory). Is that something you tried ?
Basically, you have to copy/paste all files *and* folders from the archive '' to your G'MIC sub-directory in your GIMP plug-in directory.
Having 'curl.exe' at the same level than 'gmic_gimp.exe' is useless (it was how it should be before, but it has changed).

Now you must have 'gmic_gimp.exe' and '_gmic/' at the same directory level.
(and curl.exe is in '_gmic/')



Well that solved the filters update problem, (307 filters beats 151) but my .gmic preset files (loaded in Appdata in Windows) are not showing on my definitions list in G'Mic as they did before. They are still where they were before I upgraded to and, so just by default they should still be showing now as they were before, correct?

Btw, I really appreciate you taking the time out to help me resolve this. I used G'Mic for almost all my smoothing work and for hours and hours of fun. Great plug-in! Thank you for all the hard work you put into it. :)


Actually, nothing has changed concerning the .gmic file, so it should be located at the same place as before.
Did your own filters appear with the but not with the new ?



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