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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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Ways to reduce image size for wordpress without reducing quality

I am building a WordPress website, and the website runs perfectly, but the images don't load. I've reduced the image sizes from megabytes to kilobytes, but the images still do not load. I used GIMP and www.iloveimg.com and a few other free online…
myt
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Create .tiff image with both transparency channel and alpha channel

By setting a .tiff file "tiff:alpha" tag to either unspecified or unassociated I can have photoshop display it's alpha channel as either a premultiplied transparency or a seperate alpha channel. However if I manually edit an image through photoshop,…
ForsakenCreator
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cannot connect 2 selected anchors in GIMP image editor

Is there any way to connect 2 selected anchors in GIMP to make a simple line? When I'm starting new Paths tool drawing I can connect anchors when working with same drawing, but after restarting GIMP, opening saved drawing, selecting 2 anchors like…
v01d
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How do I install Gimp-Python on windows?

I try to write a simple plugin with gimpfu in python and I tried following those instructions. 1.2. Installation Gimp-python consists of a Python module written in C and some native python support modules. You can build pygimp with the…
JaRoMaster
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Plug-in crashed: "file-png.exe" in GIMP

I attempted to add several png files to my project's.xcf file in GIMP 2.10.22 and received this error. Plug-in crashed: "file-png.exe" (D:\Softwears\Gimp\GIMP 2\lib\gimp\2.0\plug-ins\file-png\file-png.exe) The dying plug-in may have messed up…
Dinindu Gunathilaka
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Draw line in gimp with macro

I have calculated a set of lines to be drawn onto the image I calculated the geometry from. I was hoping for a macro recorder so I could just hack my geometry calculating program to spit out something similar. All I need is example code that just…
Mark Lester
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Is it possible to make a pixel transparent using Windows Paint?

I have created an icon with round corners and I want the remaining part behind those round corners to be transparent (Not white) when I use it in windows. Is it possible to do this just by using Windows 7 paint application? Or is there any simple…
Milad
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why some images are underlined with red in android studio and others not?

In Android Studio I imported pictures using File|New|image asset. Some pictures work fine but others are not only underlined with a zigzag red line in the project structure area but also I can't use them in my project. The images underlined with red…
Nadirspam
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How can I "reflect" a selection across a guideline?

I am trying to create a car skin for rFactor 2. In GIMP, there is a wireframe of the car that I can see, and this wireframe is a top-down and squished/flattened view (kind of like a map you see of the world). Here's a YT video that shows some of the…
Erik Jacobs
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How to reproduce such image schematics/graphs?

I would like to reproduce this schematic of a microscope and the graphs below it, but I can´t recognize with which software it has been produced. Do you think it has been programmed or drawn as vectors in some graphic software? I am mostly…
giammi56
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Linux: How to merge two pictures in Gimp with Python-Fu

I have to acomplish the following task: Two square, equally sized png images have to be put together side by side and exported as a combined image. This has to be done to hundreds of pairs in a folder with endings "_1" and "_2" I think this can be…
adrifromhh
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How to save multiple layer modifications in one save

I have a python script that finds and updates multiple text layers in an existing GIMP file. I want to save the whole file out as a copy. However the only way I can seem to find that documented using pdb.gimp_xcf_save requires I pass in a drawable…
Pete Duncanson
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How can I convert foreground color in a .png image file from blue to black?

I have a .png image file of a company logo with blue foreground on white. Can I convert it to black foreground on transparent background, using freeware tools?
paseena
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Remove noise, sky glow and vignetting in GIMP

I have an photo of a comet. I'm trying to use GIMP to improve it but it's like space shuttle to me. Can you please describe steps to get rid of or reduce vignetting in the corners of the image get rid of or reduce sky glow and make the sky darker…
Maxim Senin
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How to discover position of points to draw on Canvas?

I'm making a map on Canvas and I want to find the position of all the points and control points from my curves so I tried on GIMP but I don't know if its the best way to do it. What I want to know is if you guys know a better way than going point …
Murilo Boeira
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