I am looking for the following functions, are there in GIMP ?:
- Replacing a color by another
- attributing a transparence from a color or a range of colors

Thank you.

I don't know if I'm missing something insanely obvious like a checkbox, but I can't use my mouse to move things around in the layers box. Wouldn't be a problem but it means I can't add things to a layer group. Answer will inevitably make me feel stupid but I cannot figure it out.

Sand art created by nature.
   

Good day
I want to know if there is a  tutorial on how to make flip clock, or is there one that I can use. 

For example take this original image: https://i.imgur.com/ud3kX6Y.png
Compared to this: https://i.imgur.com/tTptnwm.png
I didn't edit it in any way or change any settings yet whenever I export it, it gets darker making it easier to see artifacts and overall making it unpleasant to look at.
GIMP version 2.10.22 Windows 10

I created a rectangle that was to large and filled it in with the color white and placed text in the box. I clicked out of the rectangle tool and onto another tool, but now want to decrease the size of the rectangle box. Instead of having to re-draw the rectangle I would just like to make it smaller by re-sizing it.

How can done this best be done.

Gimp 2.10

Not a tutorial. Some notes on using Openshot video editor for transitions. Openshot has lots of various effects but it is not really made for producing small frame sizes suitable for Gimp. It is possible.

You need to make your own 'output profile'. There is guidance in the Openshot documentation. As an example for a 200x200 animation. Set your own width / height to suit your project. It is a simple text file and goes in the Openshot profile ~/.openshot_qt/profiles folder.

Hey there. Hoping someone with more GIMP knowledge can help me out.

I'm essentially trying to have an animated gif be at the top of an invite for a party I'm throwing. So the top where the gif is, is animated, and the bottom lower half is stagnant text and party details. Kinda just figured I'd alter the canvas size, and write up something on the bottom half, but when I did that and exported it I get the attached message. I'm sure there's an easy solution out there, since changing the dimensions of an animated gif doesn't seem like an abnormal thing. Maybe just copying all the frames to a larger sized layer from the get go? But I don't know how to do this. Definitely a noobie with GIMP.

Any help would be appreciated.

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Hi, can we add effects between images while creating a GIF ? Something like Fade ? I wonder whether there is any GIF effects plugin available. Thanks.

I have something like the smiley list we have here, but a PNG with transparent background. ie, other than the icons ( here smilies ) everything else is transparent. Is there any method to extract these icons (around 6 ) with minimal steps instead of cropping them out one by one ? Thanks