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Monochrome png exports as...
Forum: General questions
Last Post: rich2005
Yesterday, 09:51 PM
» Replies: 2
» Views: 135
Monitoring a pixel's RGB ...
Forum: General questions
Last Post: rich2005
Yesterday, 09:36 PM
» Replies: 2
» Views: 148
re-coloured pixels hide c...
Forum: Extending the GIMP
Last Post: programmer_ceds
Yesterday, 01:04 PM
» Replies: 3
» Views: 239
Wavelet-decompose doing m...
Forum: General questions
Last Post: JohnWilliams
02-26-2026, 07:46 AM
» Replies: 9
» Views: 5,299
Smudge tool not working
Forum: General questions
Last Post: sallyanne
02-26-2026, 12:51 AM
» Replies: 3
» Views: 270
Thank you for Gimp
Forum: Watercooler
Last Post: Sampollyt
02-25-2026, 12:38 PM
» Replies: 0
» Views: 135
RapidRAW
Forum: Other graphics software
Last Post: denzjos
02-25-2026, 07:40 AM
» Replies: 3
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Hiding Unwanted System Fo...
Forum: Extending the GIMP
Last Post: rich2005
02-24-2026, 10:05 AM
» Replies: 1
» Views: 251
Version Issue
Forum: General questions
Last Post: rich2005
02-23-2026, 09:40 PM
» Replies: 1
» Views: 289
GIMP 3 Python Enums: Defi...
Forum: Extending the GIMP
Last Post: MrsP-from-C
02-23-2026, 08:27 PM
» Replies: 6
» Views: 452

 
  Monochrome png exports as grayscale antialiased (RESOLVED)
Posted by: vtgimp - Yesterday, 07:57 PM - Forum: General questions - Replies (2)

I'm presently trying to export a png file as monochrome only, but every time I do, it converts to grayscale antialiased in the saved .png.

Specifically, I save a strictly monochrome 300 dpi bitmap from MTPaint. I can view that image in any image viewer, including in GIMP itself, zoom in, and see that all of the pixels are either black or white. No grays.

In Gimp if I now export that as a png with a new name, the saved png when opened in any viewer now has antialiased greyscale pixels in curved shapes.

If I take that new image back in, and go to colors>image>threshold and again to make it monochrome, succeed at that, then save it as a png, it converts back to antialiased grayscale in the file.

I'd appreciate any advice on how I can simply save a true monochrome .png with Gimp.

Thanks in advance.

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  Monitoring a pixel's RGB value while: Colors > Curves
Posted by: BuddyEvoke - Yesterday, 02:39 PM - Forum: General questions - Replies (2)

Hi,

I am using Gimp 2.10.38 and also trying 3.0.8 on Windows and Linux too.
In Photoshop I am able to view the RGB values of a particular pixel while adjusting the:
Image > Adjustments > Curves
https://pasteboard.co/eT333BGDrmkn.gif

So far I haven't worked out how to do this in gimp. The FG/BG Colour Scales Tab doesn't change with adjusting the curves.
https://pasteboard.co/fy1G5yXkaYPk.gif

AI said there was an "Info" dockable dialogue. But when I look for one there isn't one:
https://pasteboard.co/IpS9XieukpqJ.png

Thank you, for any help.

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  re-coloured pixels hide confusingly
Posted by: cjel - 02-26-2026, 08:58 AM - Forum: Extending the GIMP - Replies (3)

Hello,
I have been exploring Script-Fu recently, and found that the procedure "gimp-drawable-set-pixels" sets the colours of pixels but does not make the new colours visible! I've got to toggle layer visibility off then on for the display to refresh, or copy the modified pixels, paste back over themselves, and merge down.

I'm aware of the function "gimp-displays-refresh", but calling it doesn't seem to do anything.

I'm assuming I'm just very stupid and there's a simple way to make the results gimp-drawable-set-pixels visible from script-fu. I certainly feel stupid after spending so much time trying to figure out something so seemingly simple, so as a last resort I figured I'd ask here.  Wink

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  Thank you for Gimp
Posted by: Sampollyt - 02-25-2026, 12:38 PM - Forum: Watercooler - No Replies

I just want to say thank you for Gimp.

Neighbour called and asked for help, scanner on old slow win 10 machine not working.

I convinced her to let me install Gimp.

2 minutes later I was scanning on her system.


I am a Linux dude since long time.

Gimp was always the first stop solution.


Yeah, I am not showing my graphics here - this way, I am not spoiling the thank you thing.

Be assured, I am using Gimp since a very long time.

And since a very long time, it is possible to load .psd into Gimp.

I worked in the graphics "industry" back then and I had to use apple and had to use adobe producs but, when it comes to "graphics", Gimp has been the number one solution for decades.
It can do the job.
It runs on your machine.
There are even ports for android.
thanks goes to the devs and surely to the whole user community base.
thanks

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  Smudge tool not working
Posted by: steele - 02-25-2026, 03:05 AM - Forum: General questions - Replies (3)

I recently installed gimp to edit my photos. I end up having to blur a lot of licence plates with the smudge tool. however, every so often, the smudge tool stops smudging, and seems to do nothing instead. I was able to fix this issue a couple of times by resetting the smudge tool, but this time it still isn't working. The only setting I adjust on the smudge tool is the size of it.
Any advice would be much appreciated. For reference, I am using gimp 3.0

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Question Hiding Unwanted System Fonts in Dock, etc
Posted by: kevinallegedly - 02-24-2026, 02:33 AM - Forum: Extending the GIMP - Replies (1)

Last year I switched from PC to Mac for a variety of reasons, but that's irrelevant. One of the most annoying things I've encountered with GIMP since switching OS is the Fonts dock.

No longer can I search within the dock for a font, I either have to input into the tool options spelled exactly correctly or scroll endlessly through all the pre-installed system & language fonts I'm never ever ever ever going to use.

I want to... 1) get all these pre-installed system fonts out of this dock, period. They are useless me, there is so many they take up like at least 2/3 maybe 3/4 of the list, they just cause me to waste several minutes scrolling through them constantly if I'm browsing for the font that feels right, and clutter up the list in general. I also am wondering 2) why can't I search in this dock? Am I doing something wrong? The input fields above and below the list appear to not do anything at all, but that can't be the case or they wouldn't be there.

Plz halp thx Smile

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  Version Issue
Posted by: EricAiken - 02-23-2026, 05:18 PM - Forum: General questions - Replies (1)

This is a serious problem!

XCF error: unsupported XCF file version 19 encountered

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  GIMP 3 Python Enums: Definitive Plug-in and Script-Fu Guide
Posted by: chuckhenrich - 02-23-2026, 12:06 PM - Forum: Extending the GIMP - Replies (6)

If you’re developing Python plug-ins or Script-Fu scripts for GIMP 3, you’ll know the frustration of tracking down correct enum values. The official API docs are written for C developers, leaving Python authors to piece things together from source code, forum posts, and trial and error.

I’ve put together what I hope is the definitive reference: every enum available in GIMP 3.0, compiled directly from a live GIMP 3.0.8 instance using a Python-Fu console script. That means the values are guaranteed accurate for that version. And the script is available as a free download so you can regenerate the complete listing for any future GIMP 3 release.

Each enum includes:

  • the Python form you actually use in your plug-ins (e.g. Gimp.LayerMode.NORMAL)
  • the uppercase PDB identifier, most useful when cross-referencing with the C API docs or porting code from GIMP 2.x Script-Fu scripts
  • the raw integer value for legacy Script-Fu work
  • the GEGL nickname for serialisation.
The Gimp.LayerMode table also includes the full GEGL operation string.

Every enum has a plain-English description written specifically for Python and Script-Fu developers.

https://www.chuckhenrich.com/gimp-3-pyth...reference/

Comments/suggestions welcome.

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  remove graffiti
Posted by: denzjos - 02-21-2026, 10:10 AM - Forum: Other graphics software - Replies (2)

An easy way to remove graffiti online
https://notegpt.io/remove-text-from-image
Choose  'Remove Text'

Original part of an underexposed photo (left original / right graffiti removed):
   
After using gimp 'levels':
   

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  Odd problem with GIMP 3.0.8 Perspective Tool
Posted by: cjsmall - 02-20-2026, 10:00 PM - Forum: General questions - Replies (4)

I've noticed a strange new behavior with perspective transformation under GIMP 3 -- something I never saw using GIMP2.  Note that while I've seen this on multiple occasions, it does not occur every time I use the tool.  I am having trouble attaching images so I will provide URL links:

Here is an example picture:

Original Picture

Here the perspective tool is being used:

Using the Perspective Tool

And here is the result after applying the perspective transformation:

Results

Notice that after dragging the lower left corner to the left, the right edge of the image has now been deleted even though it was not touched.  As I said, I see this frequently but not always.  Is this a bug needing to be reported or is it the result of some new tool setting that has changed?  

Any help better understanding what is going on is appreciated.

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