I have a large number (~3500) of .xcf GIMP projects. I would like to perform some simple operation on all of them. Specifically, the images all contain one layer that's all green and one layer that's all red, and I would like to flip those two colours (i.e. I would like to turn RGB (0, 255, 0) to (255, 0, 0) and vice versa).

Is there a way to do this automatically without manually opening each file in GIMP and recolouring it by hand?

I can not find the Ottia Tuota plugins and the 'http://kmarkku.arkku.net/' website. I get the error 'ERR_TOO_MANY_REDIRECTS'.
Any idea someone ?

I want to update my blog soon for the next version that is to come out '3'
Will it be much more different from 2.99?  and can I also get a portable 2.99?  Found Sam's

A week ago i've reported a bug in 2.99.15  https://gitlab.gnome.org/GNOME/gimp/-/issues/8886 .
Somehow i don't understand why there is no reaction.
Can anybody explain please?

Regards

Michael

When I open up an image and select Crop either through Transform Tool or by Shift+C, after I select the areas I want to crop, hitting enter doesn't crop the image. I made sure "Delete cropping pixels" is selected in Crop tool options. I also tried selecting "Current layer only" just in case that would help but have had no luck. I'm using version 2.10.30 on Linux.

Hello there all,

I've been using Gimp for a long time now, mostly for pixel art related projects, and I've come across a bit of a head scratcher with this one.
I've recently found myself needing to replace one specific color in multiple (hundreds of) files, with another. I assumed that by downloading Bimp and looking through the available processes there, it'd be a pretty quick fix, but I'm really struggling to find the process I need.

The way things are now, I just need the ability to run a batch process that finds a specific color in an image, and replace it with another (or a process that accomplishes the same effect). As it's a pixel art project, there's no need to worry about any kind of smoothing effect or anything, it's a straight up 1 for 1 exchange I'm looking for.

Any advice here would be hugely appreciataed.

Thanks in advance!

Hi Everyone, I have been learning script-fu but have hit a roadblock.

I have a script-fu script that works perfectly except that is will not delete a layer.

Here is the script, minus the variables so that it is easy to run in a console.
The script is written to run on an image with an image id of "1" so you may need to adjust depending upon your current environment.

 ((gimp-selection-none 1)
 (gimp-item-set-visible (car(gimp-image-get-layer-by-name 1  "background" )) 1)
 (gimp-image-set-active-layer 1 (car(gimp-image-get-layer-by-name 1  "background" )))
 (gimp-image-insert-layer 1 (car (gimp-layer-new-from-drawable (car(gimp-image-get-active-drawable  1))  1)) 0 0 )
 (gimp-image-set-active-layer 1 (car(gimp-image-get-layer-by-name 1  "background copy" )))
 (gimp-image-select-color 1 0  (car(gimp-image-get-layer-by-name 1  "1.png" )) '(0 0 0))
 (script-fu-add-bevel 1 (car(gimp-image-get-layer-by-name 1  "background copy" ))  5 0 0 )
 (script-fu-add-bevel 1 (car(gimp-image-get-layer-by-name 1  "background copy" ))  5 0 0 )
 (gimp-selection-invert 1)
 (gimp-drawable-edit-clear (car(gimp-image-get-layer-by-name 1  "background copy" )))
 (gimp-item-set-visible (car(gimp-image-get-layer-by-name 1  "background" )) 0)
 (gimp-file-save 0 1 (car(gimp-image-get-layer-by-name 1  "background copy" )) "Style_A_1.png" "Style_A_1.png")
 (gimp-item-delete (car(gimp-image-get-layer-by-name 1  "background copy" ))))

Error: Procedure execution of gimp-item-delete failed 

I have tried deleting it by the id alone in the console ie (gimp-item-delete  13589 )
with the same results.

Any examples or guidance would be appreciated.

best regards
Dalton

I use GIMP since the first version 2.

I noticed recently a change in the behavior of the "color to alpha" command from the 2.6 vertion. When I want to extract the white from a layer, the result is too pale when we put it over a white layer (which should however visually cancel the transparency effect)
See attached file : http://leiopar.free.fr/DISKETTE/gimp_cou..._alpha.zip
I asked the question here, with no results.
Please, how to reproduce the behavior of GIMP 2.6 with GIMP 2.10 ? (it is now not found in portable vertion)

Attached Files

  gimp_couleur-vers_alpha[1].zip (Size: 162.99 KB / Downloads: 240)

I'm trying to do something similar to this video (5:45 explains how to use overlay in paintbrush), I could follow/duplicate until paintbrush overlay, then I got lost (the paintbrush on the video is bigger than the stroke of the pen, but when passed over the pen stroke, it only enhanced the color of the stroke, not the transparent background, in my case, the brush painted over the width of the brush, not only the pen stroke), what am I missing?
ps: the opacity is set to 100% in both cases, if I tried to set mine to 10%, it won't enhance the pen strokes.

Thanks for your comment/suggestions

What is the best image optimisation strategy for WordPress? What size and format do you use?

I am thinking of using images in webp format. Is that a good thing to do? What formats do you use for you blog without making the page heavy?