[b]GIMP Version:[/b] 2.10.14
[b]Operating System:[/b] Linux
[b]GIMP Experience:[/b] Basic Level

[b][hr][/b]
Excuse me if this is the wrong place.

I'm trying to turn an image into an indexed one, so that I can use it as palette to palettize other images, but the "Indexed" option in Image->Mode seems to be disabled. The image is currently "RGB color 8-bit linear integer". What can be the cause of this? I don't know what to search online either, my search terms are too vague.

Works fine here. I'm using Gimp 2.10.12 AppImage in Linux Mint 19.3, FYI....

I'm very confused, then. I'm using the default build provided in 5.4.2-1-MANJARO x86_64, which, AFAIK, uses the default Arch repositories. There's no reason for it to be disabled.

Can you post the image in question?

You may also want to try this Gimp 2.10.12 AppImage with plugins: https://github.com/aferrero2707/gimp-ap ... 4.AppImage

Here it is.

It's disabled for me in your AppImage, too.

The image is in 'linear' mode. Change to RGB Image -> Precision -> Perceptual Gamma (sRGB) Then you can go Image -> Mode -> Indexed

As far as I can see no difference as reported by colorcube in the colours.



There is a difference in the distribution of the colours in a palette.

That did indeed fix the problem, thanks!

i just came across this issue, but this method didnt work for me. though i did manage to replicate the problem by running any image through Topaz Photo AI, so that may be very relevant
>>almost as soon as posting this, changing to 8Bit Integer did the trick