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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Can a brush in gimp have different opacity

In GIMP, I want to save a custom brush that has different levels of opacity like this: So when I use the brush I want those two lower layers to still be slightly transparent. Does gimp allow this?
Elder Tree's user avatar
2 votes
2 answers
456 views

How to achieve textured color gradients?

Some examples are below (source: https://www.etsy.com/shop/JazzberryBlue). How do I achieve gradients like this in Gimp? Or if not Gimp, what is the general process for creating gradients that blend ...
Chester's user avatar
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Photo manipulation for systemspace/Tsuki Project/cyberpunk aesthetic

"Systemspace", or The Tsuki Project, was an alternate reality game (ARG) which ran from 2017-2020. The history of the site, along with archive, is currently maintained at https://www....
A.Yuen's user avatar
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PDFs made in GIMP - Transparent background comes out red

I'm trying to make PDF with a transparent background. It's just a PAID stamp: i'm using PDFTK to make a receipt from an invoice by overlaying the PDF which just has the stamp graphic over the PDF of ...
Max Williams's user avatar
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0 answers
52 views

GIMP - export to PNG changes the color completely

I have problem very similar to GIMP - export to PNG changes the color completely (from RGB to GRAY). i.e. colors in exported images are changed to gray. What I am doing wrong? here https://www.dropbox....
kjonca's user avatar
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Cannot cut layer selection in Mac VEntura 13.16 with GIMP 2.10.34 (rev3)

That's it. Select with magic wand, hit mac Backspace or Fn+Backspace for delete does nothing. Also cut is greyed out on the contextual menu after opening it from the selection. The correct layer is ...
user avatar
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1 answer
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In GIMP, is there a way to select only one area by colour or one 'colour island' instead of all pixels by the chosen colour?

I want to select by colour but I only want to select one 'island of colour', not all pixels of the chosen colour. For example, in the image below, how would I select-by-colour: only the red colour ...
skeetastax's user avatar
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3 answers
125 views

In GIMP, how do I match the lighting or colours in one image to another image of exactly the same scene but which is darker?

I have these two images - the same shot - but one is slightly darker than the other: How do I match the lighting/colours in the image below so it matches the lighter image above in GIMP?
skeetastax's user avatar
0 votes
3 answers
67 views

How to add an overlay of CSS rgba(1, 1, 1, 0.7) to an image in GIMP?

I am not a graphic desginer but I have a colorful image which I use in HTML as a background image, to which I want to add an overlay in GIMP. In HTML-CSS I would do this: <div style="...
fuzzy_designer's user avatar
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1 answer
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Is there a way to move guides with a layer in gimp?

While creating tile sets or similar sprites I end up having multiple guides as measurements in a layer. Is there a way to collectively move a group of guides with the layer when I am arranging and ...
MiniBubblegum's user avatar
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2 answers
114 views

Trying to flip selection on GIMP

I am having trouble flipping a selection on GIMP. I use the lasso tool to select the part of the image I want to select. I then click tools > transform tools > flip but only the outline of my ...
tom's user avatar
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1 answer
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Gimp copy and paste in text editor

Hi I'm trying to add lots of names to a design that are repeated. for instance. first last. first last . first last . Etc. I only have about 20 names but need to fill a large area so was hoping to ...
ross's user avatar
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1 vote
1 answer
56 views

Count the total number of selections

I have an image of a star field where I would like to count the total number of stars. I have converted the image to black and white (1-bit indexed colours) and used the Select by colour tool (Shift+O)...
Mr. Tao's user avatar
  • 113
2 votes
2 answers
106 views

How to reduce file size of png file after setting transparent background in GIMP?

Suppose you have a .jpg photo such as this apple: (.jpg 24KB) You use GIMP to add an alpha channel and remove the white background. As .jpg does not support transparency (see this question), you ...
Karlo's user avatar
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6 votes
5 answers
2k views

How can I convert a QR code from JPG to SVG with perfect clean squares?

I have a QR code in jpg format with low quality and I need to convert it to SVG with perfect squares. I tried Trace Bitmap with Inkscape using Edge detection and all the other options, but I can't ...
Harry McKenzie's user avatar
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4 answers
168 views

Gimp - How to fade out or into a Gaussian blur

I'm running Gimp 2.10.34 I know how to use Gaussian blur on images, but is there a non-destructive way to fade out or into a Gaussian blur, similar to using the gradient tool over a white layer mask? ...
klewis's user avatar
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Gimp perspective warning

When I try to use Gimp's perspective tool to change a the selection or image, even slightly, I get this: Transformation creates a very large item. Applying the transformation will result in an item ...
John and so on's user avatar
1 vote
2 answers
152 views

How to resize QR code from vector graphic without grayish zones?

I'm trying to resize a vector graphic QR code in Gimp but it always creates an additional color in it gray. I want it to be pure black and white with perfect corners like in the original image on the ...
Harry McKenzie's user avatar
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0 answers
38 views

How can I enable auto match edges in GIMP?

How can I enable auto match edges in gimp like photoshop? I mean the pink lines in Photoshop. How do I activate this feature in GIMP?
fsgdfgdfgd's user avatar
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1 answer
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Is there websites where I can get XCF resources for GIMP (similar to PSDKey for photoshop resources)?

There are a lot of websites which are dedicated to graphic designers and photo editors who are using Adobe Photoshop. I am currently exploring alternatives and GIMP seems like a good option. But I ...
G M Fahim Mugdho's user avatar
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2 answers
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Smooth reconstruction of a given gradient in Gimp

In the following image I tried to reconstruct the given righthand side gradient with Gimp on the lefthand side. How can I get a smooth transition that cannot be perceived anymore? N.B.: To the right, ...
Yahalnaut's user avatar
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1 answer
25 views

Bucket fill won't fill a shape with color in GIMP 2.10.34

I have the problem that a bucket fill tool won't fill a shape with color in GIMP 2.10.34. How to solve that problem?
not_a_graphic_designer's user avatar
0 votes
3 answers
155 views

How can I convert an image to 16bit high color in gimp?

I would like to convert an image in to 16bit high-color. I have gimp installed, but am also open to using web tools or even command line tools. I read a question where someone suggested just using a ...
Library Seph's user avatar
2 votes
1 answer
92 views

Counting colored pixels using GIMP

Trying to count colored pixels using GIMP and following the instructions here: The image is part of a fire damage map. Dark red = severe burn, green=no burn. I need to count the pixels of each of ...
user2714356's user avatar
0 votes
2 answers
65 views

Adjusting an image so that it fits a CD template outline

I am trying to fit a picture of a CD into a CD label template. The issue is that the picture of the CD I took, despite best efforts, wasn't directly from 90 degrees above. So there's some perspective ...
user9343456's user avatar
2 votes
1 answer
657 views

GIMP: How can I undo the last point with Free Select Tool?

I was using the Free Select Tool in GIMP to plot points, and then I wanted to go back to a previous point to adjust it, but unfortunately I didn't perfectly hit the point to enable it to move, so it ...
Harry McKenzie's user avatar
0 votes
1 answer
42 views

Gimp - Make all Cars Yellow

Let's say that I have a picture of 4 different colored cars. Black, White, Green, and light blue. I want to make all of these the same shade of yellow. If you ignore black I can use Colors, Hue-...
Scott 's user avatar
0 votes
2 answers
99 views

Convert opacity value to grayscale luminosity

I would like to use Gimp to prepare files for riso printing and for this I need to convert each individual color layer from opacity (x%) to greyscale ((100-x)% luminosity). Precisely, this is the ...
Purple_ghoost's user avatar
0 votes
1 answer
61 views

Gimp - How to simplify nodes on path

In my Gimp project, I created a custom shape, then converted it to a path. But I wish there was a way to reduce the number of nodes it generates... What would be a good way to reduce the number of ...
klewis's user avatar
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3 votes
3 answers
546 views

colorize an area of (mainly) one color to a given target color in GIMP

I have the following image: I want to change the colors so that they match my own Xylophone. Since there are in-between colors at the borders, just selecting a color and filling the selected area ...
Kjara's user avatar
  • 135
0 votes
2 answers
147 views

Gimp: Extend border of image, fading into a color

I am starting with a rectangular picture of size say 700x700. I wish to extend it to 1000x1000, with the picture centered, and the outermost 1 pixel completely black (say). The space between the ...
Michaël's user avatar
  • 101
2 votes
1 answer
213 views

gimp: can you save the file with all the undo history?

right now when i do image editing there are 10-100 undo history that is needed to achieve my desired output. when i click save and close the image. then open. the undo history is lost. is there a way ...
Trevor Boyd Smith's user avatar
2 votes
1 answer
87 views

Gimp - Why am I unable to snap to the edges of the brush?

When I enable snapping I am unable to snap to the edges of the brush. For example: Is There something that I am missing?
bill chill's user avatar
0 votes
2 answers
91 views

How to change the background of the TV Studio Virtual Set?

I was wondering if it is possible to replace the violet city skyline that appears om the background of this nice TV Studio Virtual Set as shown in this picture: with the one I wanted: Thank you for ...
Archean Eon's user avatar
0 votes
1 answer
76 views

Gimp: How to change or adjust selection parameters after the selection is made?

In Gimp, I frequently fall into this trap where I've already done a very complicated selection and then realize that the Feather edges Radius was not set to the desired value yet and then I end up ...
Harry McKenzie's user avatar
0 votes
1 answer
49 views

How to flatten only selected layers affected by Addition mode in Gimp?

I have a layer that uses Addition mode since it made the nicest desired effect. When I duplicate it, it makes it even nicer. But when I merge the layers, it looks different as if the Addition mode ...
Harry McKenzie's user avatar
3 votes
3 answers
139 views

Photo restoration issue -- need suggestions

I have a photo I am trying to restore and it's badly faded, but also has splotchy stains on it, like it got wet in streaks while up against the glass of a frame. The faded part I can handle (more or ...
WaldportTechServices's user avatar
0 votes
2 answers
578 views

Gimp make new image from selection or layer

What is the fastest way to make a new image out of the selection or selected layer? I thought I remembered it was as easy as dragging it to the top where the tabs for different images is but can't ...
Scrampus's user avatar
  • 103
0 votes
1 answer
56 views

Grouping soft light layers causes them to merge

I'm working with a graphic with a relatively dark background. I've got some white text in the foreground, and I set the blend mode of the text layer to Soft Light to make it semi-transparent. I then ...
EJF's user avatar
  • 105
1 vote
2 answers
68 views

Recolor pixels between two colors/patterns

I have a project where I have a design on a checkered background. To create this, I have a layer for the design and a layer for the checker. However, when I remove part of the design to show the ...
Melanie Palen's user avatar
1 vote
3 answers
95 views

How to merge / blur together a large amount of pictures on different layers

B"H I have hundreds of pictures that I simply drag and drop from my filesystem to gimp, when it adds them each as a separate layer. I then manually drag each one to a place I want it on a page, ...
B''H Bi'ezras -- Boruch Hashem's user avatar
0 votes
1 answer
111 views

How to transform in Gimp an arbitrary selected part of an image to rectangle shape?

I would change the shape of this lasso selected arbitrary shape to rectangle. My garden is 24 x 42 m rectangle.
János's user avatar
  • 307
0 votes
2 answers
238 views

Gimp: Extend Background with Colour Gradient

I would like to extend an image like this to the left and to the top with GIMP. I just do not seem to find quite the fitting gradient. This image is an example as a background. In the original there ...
Yahalnaut's user avatar
0 votes
1 answer
38 views

GIMP Change pixel to transparent only if above/below layer color match

I have an image - game map. It was generated a long time ago and not by me. I wan to reverse-engeneer this map to create my own tileset. E.g. I have a tile with grass with tree: And I have a tile ...
Alexey Vol's user avatar
1 vote
2 answers
70 views

Can layers be symlinked in gimp? Like if they were the same layer

Can layers be symlinked in gimp? Like if they were the same layer. For example, I have one tree, and I want to create a forest. I want to draw a single tree, dup that layer into 20 layers. Then i will ...
VeganEye's user avatar
0 votes
4 answers
152 views

How do I make a seamless gravel pattern but with different objects?

I'm trying is to make is a design from four cupcakes that overlap and are seamless just like a seamless gravel pattern basically. I've added a picture below to show what I want to create. Now you may ...
G-J GAMES's user avatar
1 vote
5 answers
220 views

How do you invert gray values in an image, but leave colors intact?

I found this guide, but some reason, that only works for some colors, but not for others? What can I do? Here is a sample image: And here is what it looks like if I do the inversion: Note how the ...
mapf's user avatar
  • 113
0 votes
3 answers
500 views

How to move layer but not its connected mask

In Gimp 2.10.32, I have a layer mask going on.... How can I click and drag my left side layer image around, but have the right side mask stay locked in place?
klewis's user avatar
  • 563
1 vote
1 answer
47 views

Software that preserves original raster image information during multiple resizing?

I am in the process of transitioning from Powerpoint to image processing software to create professional-quality images for academic publications. I was trying to organize several images into a graph/...
K.Mole's user avatar
  • 113
0 votes
1 answer
204 views

I'm trying to replace/change colors in an image

I have this logo that came along with a theme: On a website, a new branding occurred, and now we have a limited range of colors: --color-primary-blue: rgb (44, 45, 101); --color-primary-...
DoomerDGR8's user avatar

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