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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138 views

How to blacken all pixels below certain brightness level in a grayscale image in Gimp?

I have a grayscale image in Gimp. I need to blacken all the least bright parts and only keep those that are above certain brightness threshold. For example, initially all grayscale pixels lie within 0-...
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1answer
65 views

Gimp: Apply gradient only on colored parts (not on transparent spaces) of a layer/image

I have an image that I've put into a new layer. This image has a lot of transparent empty spaces. I have colorized the non-transparent spaces in black. The transparent parts are still transparent. I ...
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1answer
55 views

GIMP: Lock layers to be identical

I have a file I'm setting up to essentially split a background image into three parts which I can apply transformations to independently; I'm doing this by setting up three layer groups, each of which ...
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1answer
263 views

GIMP: Convert Layer to Mask

I have an .xcf with several layer groups, each of which has a background image (from an outside source) and then a blackout layer on top of it which covers up everything from the background that I don'...
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1answer
68 views

How to use the heal with current layer and below in Gimp

I want use the healing tool on a separate, above layer of my picture. Is there a option to use the healing tool with 'Current & Below' layers?
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1answer
84 views

Gimp: How can I only keep shades of yellow in an image?

I have a spectrogram of a sound Darker colors mean quieter parts, brighter colors - louder ones. I need to erase all "quiet" parts from an image and keep all "loud" ones. Loudest ...
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3answers
258 views

How can I draw shapes with a pen tool and colour them in without white artifacts?

In this (zoomed) picture you can see white artifacts at the edges of the coloured sides. This is caused by me selecting the white area of each face, and using that selection to limit the colouring-in....
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3answers
1k views

Using Gimp; which is the best method for removing the text from this image

Heal selection? This is the one I think might work best but not sure and would like to know if others agree. I searched the various methods used to remove text from images and found one I thought ...
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83 views

gimp 2.10.20 issue with scaling blurred images

for some reason in the gimp 2.10.20 version of gimp, scaling blurred image with transparent background(or layer) has problems. I just blurred a circle on a transparent layer, and I tried to scale it, ...
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106 views

What could be problem, when exporting to pdf from gimp

When exporting a file from gimp to pdf format, to include in publication, the items show up with a gray border on left and right, much shorter than full-scale. I’ve checked the dimensions on pages ...
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2answers
136 views

Batch polar coordinate conversion

I need to convert many files of the same size to polar projections. This is easy to do in GIMP with the Polar Coordinates plugin (Filters > Distorts > Polar Coordinates). However, I'm not sure ...
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1answer
113 views

Why is there a 'Minor Model Age Disclosure' in GIMP under 'Edit Metadata'?

Recently I went to Image -> Metadata -> Edit Metadata -> IPTC Extension in GIMP, and when I scrolled down I found 'Model Age', but with a 'Minor Model Age Disclosure' option underneath it. It'...
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1answer
89 views

How can I read colors along path?

I would like to read continous color gradient from the image using the path ( white line on the image). I know that I can read palette but I want to read all values in a specific order to create ...
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85 views

Drawing over an image in gimp without downscaling artefacts

So I want to draw a character for my game, by first drawing it on a paper, then scanning it, and then putting it as a bottom layer to GIMP to draw on top of. My problem is when I try to do this for a ...
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3answers
359 views

Best Image Compression process for jpg web images?

Let's say I have a 1 mb JPG image file that I need to make a minor edit to and re-save. For the editing, I can use photshop or gimp. For compression, I can use photoshop, gimp, and any of those online ...
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103 views

In GIMP, how do you crop a photo without changing the aspect ratio?

I know I can go to image properties and then type in the resolution manually into crop for each image I work on, but is there a button to keep the photo's aspect ratio automatically? Seems like this ...
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1answer
91 views

What happens to the alpha channel in different blend modes

I have a question about how the resulting alpha is computed for different blend modes in gimp. The manual [1] describes the color channels, but not how the opacity is processed (I am also sort of ...
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1answer
31 views

GIMP - Image wont move at all

Tried every, Merge Down, move it, different image, uninstalling. Dont know what else to do. Heres a little vid. https://streamable.com/er09oz
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1answer
87 views

Export as JPG at 85% quality Gimp file 2x smaller than Photoshop

I took a stock JPG photo and cropped it to 3840x960px. Then I loaded it into two apps: Gimp and Photoshop. I used Gimp 2.10.6 File > Export As... dialog, changed the quality to 85% and clicked ...
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1answer
240 views

Gimp fuzzy selector selection not being removed on delete

I've done this precise thing before, but for some reason after selecting with the fuzzy selector the portion of the image I want to remove and hitting the delete key, it's not being removed.. Am I in ...
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1answer
995 views

Transparency in pdfs exports from GIMP 2.10.8

There is something I was able to do with Gimp 2.8 and not with the 2.10.8 version. In order to use some stamps in pdfs, I have to create them from scanned documents, possibly where they appear on a ...
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1answer
1k views

Missing ellipse selection tool

For some reason my Gimp 2.10.18 is missing the ellipse selection tool...
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1answer
109 views

How do I enlarge JUST the background layer in GIMP?

I am working on an image with several layers on a green background. I want to make that background bigger WITHOUT also enlarging everything else. How do I do this? Canvas Size doesn't work, it just ...
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0answers
318 views

How do I move, resize and rotate the rectangle I have drawn?

This is how I draw rectangles in GIMP: Select a foreground color. Select a rectangular area using the Rectangle Select Tool. Edit > Stroke Selection Using this method, I drew two rectangles: a ...
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1answer
372 views

Add an Existing Animated GIF into a Still Image Without Losing the Animation

Using gimp, I'd like to insert an animate gif into another still image without losing the animation. Is there an easy way to accomplish this in GIMP? I was able to drag the animated image's layer-...
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1answer
75 views

GIMP: Gaussian blur leaves higher light levels in axial directions

I often want to blur a circle either internally (and not externally) or externally (and not internally). In the example below, I have applied Gaussian blur to an image, selecting only the circle so as ...
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1answer
36 views

In GIMP, how might the label on a can of soup be unwrapped?

Let's say I have a photograph of a can of soup: How might the label on the can of soup be "unwrapped" in GIMP, resulting in a more rectilinear representation of the label?
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1answer
147 views

How to create dropshadow on layer with alpha transparency in GIMP?

I'm working on a project consisting of a background image with several layers on top of it. Each of the layers consists of an image with alpha transparency, such that only part of each layer is ...
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1answer
2k views

How to draw border around layer in GIMP?

How can I draw a simple border around a layer in GIMP 2.10? Filters > Decor > Add Border works on the image as a whole, not an individual layer. Edit > Stroke Selection has been suggested ...
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1answer
139 views

Text Not Showing Up In Gimp (Mac)

I'm trying to add some text to a moderately complex layout, but the text tool is malfunctioning -- everything shows as blank no matter what I type. I have checked: Foreground color shows reasonable ...
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1answer
34 views

Unable to open a colored image layer

When I go File->Open as Layers... and open a PNG, the layer is shown in black and white, although the image is colored and the preview also shows a colored image. I want a colored layer.
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1answer
1k views

How to remove an object from a photo in GIMP?

I'm new with GIMP (2.10.8). I have this photo: In this image you can see my finger and I tried to remove it with Layer > Transparency > Add Alpha Channel, I get this result... I then tried to ...
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1answer
31 views

Adding color to the distorted portion of text

I am trying to add color to the distorted part of an image or text but can't seem to then clear the full back ground from the image as the initial image is no longer whole because of the distortion ...
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1answer
42 views

plug-in waves have different signature in pdb

everyone. Basically i want to automatically add waves effect with different phase shift, but in python-fu browser i found that plug-in-waves have different signature - there is no phase shift, period ...
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1answer
148 views

How to change the hue/saturation/brightness for only a part of the image in Gimp?

I already know how to change the aforementioned settings for the entire image. But what if I only want to change it for half of her face? Or for some arbitrary non-rectangular region? How would I go ...
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2answers
482 views

GIMP: Non-linear image scaling

In GIMP, I want to be able to scale an image non-linearly on the horizontal axis. The perspective and mapping tools don't work for this because they change the image vertically for the perspective. ...
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1answer
76 views

GIMP: Why does "Channel to Selection" give such bright values?

As shown below, an extracted channel (here blue) gives a brighter result when using the "Channel to Selection" from the context menu in the Channels panel and creating a mask from that ...
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1answer
268 views

Why "Fill whole selection" under "Bucket-fill" tool leaves some area partially filled?

I want to mask different type of RBC with different color. After selecting same type of RBCs using Fuzzy Selection Tool (and Remove Holes option) , I used Bucket tools to FIll whole selection. But I'm ...
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1answer
217 views

Text layer names automatically changing

In GIMP 2.10.18 - after creating a text layer, I edit the layer attributes to give the text layer a meaningful name. This is important as I'm working with a python script that will reference the layer ...
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0answers
44 views

Automatically apply external script whenever image changes

While editing an image (i.e. while there's a new version of it every few seconds), I would like to continuously see what the newest version would look like after running an external script on it (for ...
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1answer
181 views

How to uncheck Antialiasing in Rectangle Selection in GIMP?

I am unable to uncheck Rectangle Select's Antialiasing in GIMP, every other options works just fine, as well I can uncheck Antialiasing with every other tool. What am I missing?
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1answer
51 views

How to edit a freshly opened image in GIMP? [closed]

I'm using Ubuntu 18.04, I took a screenshot which I saved as a PNG in my Pictures folder. Next, I right clicked the image and selected "Open with other application" to open it with GIMP. ...
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4answers
5k views

How to set a background color to a text layer in Gimp so that the background automatically resizes as you type and the text changes size?

I want to add some text to an image in Gimp with the Text Tool, such that the background of the text layer (a rectangle) is of a fixed color instead of the default transparent background to make the ...
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3answers
575 views

How Do I Make an Image Look Lower Quality?

I notice that when I first load up an image in Photos or some other image viewing application, it seems blurrier for a short amount of time before sharpening. How do I deliberately replicate this ...
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1answer
196 views

Gimp: center layer on another

I have two layers. The background layer is way bigger than the front layer (which contains an image). I want to center the front layer horizontally and vertically on the background layer. I can't get ...
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2answers
5k views

How to edit .eps file in Gimp or Photopea?

I have an .EPS containing text which I downloaded. However, I don't know how to edit the EPS file ? I can load it up into Photopea, however, i can't seem to edit it like a .psd file, im confused. I've ...
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1answer
1k views

How to align separate text blocks in GIMP

Using GIMP 2.10. I have a graphic that I am adding some labels to. When I create the labels with the Text Tool, it puts each label on it's own text layer, which I guess is okay because I can merge ...
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1answer
273 views

Gimp won't let me select the pencil tool

I am creating an image with Gimp but the pencil won't show up. I looked in the manual for the keyboard shortcut and it didn't show it. I tried to open the toolbox and I wouldn't open. I need to open ...
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0answers
406 views

GIMP GAP - exporting frame sequence as .png with transparency

I can't find anywhere how to save my frames as .png sequence with alpha channel. Frames are semitransparent grey. I need it because then I want to convert them into .webp animation with another tool. ...
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1answer
108 views

Preview all visible layers in GIMP

I am attempting to wrap an image around a tilted cylinder using the Curve Bend tool, however, due to perspective this is proving difficult. The main issue is that I cannot see the cylinder in the ...

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