Batch Watermarking GIMP3.0 with G'MIC-qt and Batcher

GIMPhelp · **Joined:** Nov 23, 2025 **Posts:** 1

I am on Windows 10 and would like to batch watermark a large number of images. I have experience with GIMP but not with GIMP automation or batching.

This is with GIMP 3.0.6 and G'MIC-qt.

The G'MIC-qt watermark filter within GIMP works very nicely when used manually.

I installed Batcher with the intention of automating the G'MIC-qt watermarking process.

Batcher within GIMP seems to work fine (basic functions, I'm not familiar with it).

However, the problem is Batcher does not 'recognize' or 'find' any of the G'MIC-qt filters (including the watermarking filter). In other words, the G'MIC-qt filters do not show up in the Batcher menus.

Is this a known problem, or have I installed Batcher incorrectly?

Please help. Thank you.

Wallace · **Posted:** Mon Nov 24, 2025 1:19 am **(#2)**

I've use G'Mic in the past and was able to watermark each layer,
or image that is open as layers.
I think you need to adjust the output setting to all layers.

However,
the exporting of all these layers as separate images might be an issue,
if an export script isn't used.
I don't know of any export scripts for GIMP 3 just yet.

Edit:
I don't think GIMP Batcher will show G’MIC-Qt filters.
If anything this might be a limitation.

rich2005 · **Joined:** Mar 04, 2011 **Posts:** 2603

GIMPhelp wrote:

I am on Windows 10 and would like to batch watermark a large number of images. I have experience with GIMP but not with GIMP automation or batching.

This is with GIMP 3.0.6 and G'MIC-qt.

The G'MIC-qt watermark filter within GIMP works very nicely when used manually.

I installed Batcher with the intention of automating the G'MIC-qt watermarking process.

Batcher within GIMP seems to work fine (basic functions, I'm not familiar with it).

However, the problem is Batcher does not 'recognize' or 'find' any of the G'MIC-qt filters (including the watermarking filter). In other words, the G'MIC-qt filters do not show up in the Batcher menus.

Is this a known problem, or have I installed Batcher incorrectly?

Please help. Thank you.

Some interactive gmic filters will not work but most will. Goes like this:

Start off with an image in Gimp. Apply a filter. Copy the filter command string.

Attachment:

gmic01.jpg [ 113.57 KiB | Viewed 1478 times ]

Start Batcher - you can use export images or export layers or edit layers - up to you and depending on image(s)
Go to Add Procedure -> Custom Procedure -> Plug-ins and find plugin-gmic-qt
Set the input mode to 1 and paste-in the command string.
Add then run Batcher to process the selected files.

Attachment:

gmic02.jpg [ 119.21 KiB | Viewed 1478 times ]

@Wallace: for Gimp 3 https://sourceforge.net/projects/gimp3- ... s/general/ ofn3-export-layers