Questions tagged [gimp]

Questions about GIMP, the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. Ask scripting questions on Stack Overflow, software support questions on Super User, and anything related to design here on Graphic Design.

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GIMP (or others): How to remove background (by color) of several images in one step?

I have a set of about 200 PNG-images in like that: Only black and white, no colors, no grey. I need the background color (white) to be removed and tried to do so in macOS Preview (with that Instant ...
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1answer
18 views

Opacity formula in GIMP 2.10.0

Let's say I have a background layer (B) filled with RGB 255 115 0 (C1), and a foreground layer (F) filled with RGB 64 64 64. Both layers are in Normal blending mode, the opacity on F is 80%. The ...
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1answer
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Make text box center along columns

I want to create text where each column is centered horizontally based on each letter's center, like this image: However when I try this in GIMP it inevitably ends up off center using the text tool. ...
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1answer
22 views

How to cut multiple selections of same aspect ratio from large scan(s)

I have several high-resolution scans and would like to crop details from them, always using the same aspect ratio (but not necessarily the same size). The intended use is for an article, where each ...
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1answer
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Change multiple png sprite file color to another color

I have a sprite of 100 png files. This sprite file contains two colors only. Grey and blue. Which software or application would someone recommend where i can rapidly change the two colors of these png ...
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1answer
29 views

Change how big a pixel is in an image

I have an image which I am trying to adjust by moving some parts, but when I try to move a certain part, even when I'm zoomed in as far as possible, the most precisely I can move it is by one pixel. ...
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1answer
21 views

Checking details of levels adjustment after adjusting

I adjusted levels manually on a picture and would like to know the values to apply the same adjustment on other similar images. Does GIMP let me view those settings after the fact?
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1answer
24 views

Exporting GIMP image to pdf with specific page size

I need to use GIMP to generate a particular .pdf with a specific page size, namely, A1. For this question, I did a minimal working example with A4 page size, since I believe the specific format ...
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1answer
36 views

How to make Darktable work in GIMP?

When I open a RAW NEF (Nikon) image in GIMP, the dialog says: GIMP Message Opening '/path/to/file/_DSC0001.NEF' failed: There is no RAW loader installed to open 'Raw Nikon' files. GIMP currently ...
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2answers
54 views

How to batch convert RAW NEF to JPEG in GIMP?

I have dozens of pictures in RAW .NEF format from a Nikon camera that I want to convert to JPEG. I found this page with a Script-fu plugin that has a batch mode. I installed GIMP and UFRAW with: brew ...
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2answers
115 views

What are some techniques for designing realistic-looking planets and moons?

I have had this problem for years now. I know what I want for my fictional planet or moon, and yet when it comes to creating an image of it, I continue to fail. How can I break down the task of ...
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1answer
46 views

Gimp Tools Bugged

my some of my tools not working anymore like I can change their settings like size or shape but they're not actually drawing anything its like drawing transparent and the brush cursor stuck at the ...
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54 views

Matting Levin foreground select not working in gimp 2.10

I'm trying to select a foreground object from a photo to remove the background using gimp 2.10.14. I am following these steps: rough outline of object using lasso tool press enter to enter ...
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1answer
32 views

How to automatically outline shapes

I need to draw outlined shapes, like in this example: I created the example selecting the coloured areas and using Edit > Stroke selection, but it isn't very handy when there are several shapes. I'...
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1answer
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Transform is limited to border which I can't change

I have an object which is limited by black-yellow border Then I surround it with cage transform markers Then when I move those markers to do the transformation, the object is still limited by the ...
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1answer
28 views

Rectangle Select Tool moves the image instead of creating a selection in GIMP

I'm a reasonably seasoned user of PhotoShop but a newbie to GIMP. I need to take Print Screens and fuse/crop them together to create images that display full views of the pages on a certain site. To ...
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3answers
58 views

Is there a way to create a brush working as a pattern?

I have a pattern that I use to draw arbitrary-shaped curves like this: To achieve that I create a layer filled with my pattern and a blank layer, then I "draw" my line erasing the second one. A brush ...
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1answer
50 views

Gimp: why can't I edit an image when I open it the first time [closed]

When I open Gimp on Windows and then open any image e.g. jpg, png I can't do anything with it. I've been using Gimp for 10 years+ and this problem started occurring in the past two years with all ...
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1answer
26 views

How do you get a gimp plugin/script to appear in menu [closed]

I am using Gimp 2.8.16 on Ubuntu I am following the tutorial here I have created the script hello_world.py and saved it to ~/.gimp-2.8/scripts.hello_world.py I restart Gimp, but there is no sign ...
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2answers
78 views

Restore transparency to a part of an image

I have this image: Downloadable here. I need to isolate the libellula and "restore" the transparency of its wings, the areas highlighted here: I haven't problems to isolate it but how can I restore ...
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1answer
22 views

Show name of custom patterns in GIMP

I'm creating a set of custom patterns with GIMP. When I import them I would like to have their names below the filter field, as the default ones have: However, GIMP only shows a #1-like string: I ...
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2answers
67 views

How to create light cone and haze effect

I have an image with stage lights in it. I am trying to add an effect so that it looks like the room is filled with haze and therefore there would be a cone coming from the light sources. Here is my ...
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3answers
36 views

Centered grid with GIMP

Working with GIMP I need to use the grid. It is aligned on the top-left corner of the image, but I need it to be centered, splitting the incomplete squares on both the sides. I tried with Image > ...
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1answer
25 views

Can not fill or paint on layers in Gimp [closed]

I am working on an image in gimp that has multiple layers. I just added a new layer, and am now observing some odd behavior. I have three layers, A , B , C. C is the newly created layer. For some ...
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1answer
17 views

How to Fill Edges of a Selected Area in GIMP

Is there a way to select an area in GIMP, then fill every part of the selected that is a certain distance or more from the edges of the selection other than doing it manually? So a black circle like ...
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1answer
45 views

How to tile an image with exact dimensions (any program)

I am trying to print tickets for my school and they need to be exactly 14.5 cm by 10.6 cm. How can I achieve this by tiling the image I have of the ticket so that they print out exactly at this size ...
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1answer
57 views

How does one align two maps with different projections in GIMP or a similar program?

I am trying to take a modern world map and transpose historical borders taken from various snippets of other maps onto it. Unfortunately these maps are all of different perspectives and thus no amount ...
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1answer
17 views

GIMP - How copy/paste shape- in my case, a rectangle?

I know I can using the rectangle selector then using edit=>stroke selection to make my selection's shape a solid rectangle's shape. Now I would copy the exact same selection's rectangle to variate ...
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2answers
47 views

Is there a function to “merge all layers” in GIMP?

It would be more effective. Currently I have to merge them one by one. In some cases it can be a time consuming process.
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0answers
27 views

How can I align text to some curve?

How can I align text in GIMP so one of its sides “touches” some path or the text is placed inside path? Example: The text is aligned so right side of text line bounding box is at the number 4.
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1answer
43 views

GIMP, can I make selections where the selection line has 'zero-width'?

I have a PNG file of, for example, a person with arms and legs. I want to select an 'arm' and copy it into a new layer. I then want to delete the 'arm' from the original image. So I would have one ...
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2answers
23 views

Gimp - How do I make a selection transparent

I am using GIMP. This seems like such a simple thing, yet I just can't get it to work. I did "color to alpha" on a selection, but it only made it partially transparent, very annoying. So I have ...
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1answer
39 views

Allign 3 B&W layers to make an RGB picture

I'm trying to process a picture of Jupiter from Junocam and I'm trying to align 3 B&W picture to make an RGB picture but it's not working, I tried differents opacity but it still not working, I ...
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2answers
52 views

How do I crop a layer in GIMP?

Sometimes, I'll have several layers on an image and I want to crop one of them. NOT resize it, crop it. Every technique I've tried simply crops EVERYTHING, not just the layer I'm working on. I have to ...
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2answers
44 views

Does corel-paint-shop-pro have anything gimp does not?

Was looking at the humble bundle of corel software. I've always been unhappy with gimp and was looking at alternatives to improve workflow, and get better versions of stuff like gimps magic wand (i ...
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28 views

Gimp - How To Apply Threshold Alpha To Many Images At Same Time

I've been upscaling images using ESRGAN and IEU Winform, and I am very satisfied with the results. My only problem is that some of the sprites I'm upscaling are partially transparent where they ...
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24 views

Controlling transparency in GIMP?

I have a question. Can you make it half transparent? Or any other percentage? I’m making a Minecraft Resource Pack and I am trying to make the stained glass. Thanks!
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2answers
138 views

Gimp: How to warp an image to take shape of path?

I am new to Gimp. I would like to warp an image such that it fills the closed path (closed path and imported image is shown in the image below). The given closed path has a shape of truncated pie. The ...
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1answer
36 views

Move selected pixels on multiple layers simultaneously on GIMP

I have several images of the same brick texture but with different color values for different purposes like this: They are in reality much bigger and there are 10 images in total. For my project ...
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3answers
68 views

Gimp Question: How to remove multicolored transparency?

I am getting a little frustrated with the newest version of Gimp because it is doing something that the older version has never done in regards to a transparent background. In the old Gimp, when I ...
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2answers
54 views

How to select a bunch of points of a path for removal in GIMP?

I created a path with a lot of points. I then duplicated the path so that I can attempt separating them into two smaller paths. Is there a way to select a bunch of the points as a group to perform ...
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0answers
32 views

Improving a photo's quality using gimp

I have this image which is already of poor quality for an image on AO paper. I was trying to sharpen the image but it doesnt help. I have no expertise in image editing so it was quite frustrating for ...
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0answers
31 views

Photoshop Layer Effects similar functionality with GIMP?

In photoshop there is a button on bottom of the layers panel,looking similar to this "(ƒx)" . How can I achieve similar effect on layers within GIMP?
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3answers
121 views

How to flip brush in GIMP?

How do I flip brush in Gimp? There is a option to rotate. But I want to flip Brush horizontally/vertically. Also is there any way to set keyboard shortcut for rotating brush while using it with tool(...
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1answer
18 views

How do I change specific channels with the curves tool in GIMP?

When I click the "Channel" dropdown in the Curves tool in GIMP, all of the channels are grayed out and I can only select "Value". What would cause them to be grayed out? What do I need to do to change ...
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1answer
40 views

How to apply the same levels adjustment to multiple images (or layers)

I have a timelapse recording where I need to do uniform levels adjustment. I can load them all in in one image as layers, but when I adjust levels it changes the selected layer only. So I basically ...
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1answer
55 views

How to make Gimp brush size pressure sensitive?

I've just downloaded Gimp and am trying to figure out how to change the brush dynamics so that the brush thickness changes relative to the pressure I apply to the stylus. There seems to be a way to ...
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1answer
39 views

How to make multiple random motion blur effect in GIMP?

There are three type of motion blur I found in gimp. Radial,linear and zoom. I need to use radial blur effect with random multiple distributed center. If I try to apply filter again and again changing ...
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1answer
64 views

In GIMP, how to stroke a selection or a path with gradient?

I need the edge of mask to be fuzzy. The ways i found to do this is either by feather a selection or by stroking a selection with a fuzzy brush. But i need to define the edge transition more ...
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1answer
25 views

Closing gaps between lines in GIMP

I have a bar chart, a selection of which looks like this: I'd like to fill in the white spaces between each bar such that the bars become a single uninterrupted color, which would look (roughly) like ...