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Questions tagged [gimp]

For questions about programming the GNU Image Manipulation Program, including plug-ins. Remember to include appropriate tag(s) for the programming language in use. Questions about non-programming use are off-topic for Stack Overflow; consider asking on Super User or Graphic Design instead.

Gimp is an acronym for Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.

The core of GIMP is implemented in .

Plug-ins may be implemented in a wide choice of languages, including , and and .

Resources

Gimp programming tutorials

Books:

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How to check if program was compiled with debug symbols?

I'd like to trace some code in GIMP and therefore need GIMP with debug symbols enabled. I don't remember whether I have enabled them during compilation. How to check that without recompiling the program?
Lukasz Czerwinski
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install gimp with homebrew?

I worked with gimp a while back when users had to install x11. I want to install it again for a project requiring image editing. I see there are a lot of enhancements to the installation process. It seems installing x11 is not required anymore. I am…
apadana
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How to dock "Tool Options" to "Toolbox"?

The "Tool Options" and the "Toolbox" used to be in the same window, but it somehow broke apart. Can somebody give some hints as how to bring them together as one again?
Stanley
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Edit only alpha layer in GIMP

I'm trying to create a "corona" effect (like the sun's corona) in an image using GIMP, but I'm having trouble editing only the alpha channel of the image. I want the RGB to be pure white (255, 255, 255) and the alpha layer to have a brush effect…
Knetic
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How to convert XCF to PNG using GIMP from the command-line?

As part of my build process I need to convert a number of XCF (GIMP's native format) images into PNG format. I'm sure this should be possible using GIMP's batch mode, but I have forgotten all of the script-fu I used to know. My input images have…
Laurence Gonsalves
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How does Photoshop's magnetic lasso work?

Seems like GIMP's intelligent scissor is based on a paper from SIGGRAPH '95 on "Intelligent Scissors for Image Composition", as seen in one of the comments in the source. However Magnetic Lasso in Photoshop differs a lot, while GIMP's tool gives…
Abhishek Mishra
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Using a CMYK PSD without Photoshop

I have run into a common, yet difficult problem. I do not use Photoshop for image manipulation. Since all my work is web-based, GIMP does what I need in 99% of the situations. The problem is that I occasionally receive PSD files with CMYK encoding…
64BitBob
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Google Play Store: You need fix your high-res icon. It is not a valid image

This is the error message I get when attempting to give my app an image on the play store. Here is the image. It was created in GIMP. Please help, this is keeping me from getting my app up.
sajattack
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24
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Resize image to fit canvas - Gimp

I'm currently using Gimp to resize some images. I'm a web developer but I don't really use image manipulation software much as most of the images are provided by designers so the Gimp tool is very unfamiliar to me. I've looked through all of the…
jezzipin
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Converting XCF and other files using command line with GIMP?

If I have an XCF file (or any other supported by Gimp) how can I convert it to, for example, PNG for display or further processing?
Ivan Vučica
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Gimp: How can I change the text on a layer using Gimp

I have PSD file with layer text, I try to modify a layer text in Gimp but I can't find a way to select that text and change it to something else. Thanks for your help!
Vuthy Sok
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Calculate colour temperature in K

I have written a lib for working with colours and stuck trying to calculate Tc(k). From what I have read working in the CIE 1931 XYZ colour space is the way to go and it can be obtained using xyY. So far I have got everything correct to the point of…
dogmatic69
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Writing gimp plugins in python on windows- how do i debug? where is the output?

EDITED HEAVILY with some new information (and a bounty) I am trying to create a plug in in python for gimp. (on windows) this page http://gimpbook.com/scripting/notes.html suggests running it from the shell, or looking at ~/.xsession-errors neither…
vish
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How to fill transparent area left by resize in Gimp 2.8

when I do a canvas resize of an image, it leaves a new transparent area. I would like to fill that area with a color but Gimp 2.8 won't allow me to select it to fill it. I must be missing a step. Please help.
shirha
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Is there an easy way to cut a slice from an image using Gimp?

Wondering if there is an easy way to remove a rectangular slice across the entire width of an image using Gimp, and have the resulting hole closed up automatically. I hope that makes sense. If I select a slice across an image and do "cut", it…
chacmool
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