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 ...

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1answer
47 views

GIMP: Ellipse position from center

I know that I can create an ellipse from the center. However, inside the tool properties panel, "Position" refers to the top-left corner. How could I change its position based on its center point? I ...
3
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2answers
98 views

How to create an 16× error/difference image using GIMP or Photoshop

I need to create a quality comparison between two rendering methods by showing the difference of the results akin to figure 6 in [Walter et al. 2005] (p. 5): (Image copyright by Walter et al. 2005). ...
2
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1answer
152 views

How to have multiple views in single window mode using GIMP?

I'd like a real-time preview while editing icons in GIMP. I know that you can press View > New View to get a real-time preview window, however in single window mode gimp puts the preview in a ...
2
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1answer
733 views

Gimp - How to loop a gif seamlessly?

So I'm new at editing and I'm trying to insert gifs but somehow it always ends up with a gap after the gif ends and looks weird, I have no idea how can I change that :/ can anyone help me please?
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2answers
2k views

Export PNG image without alpha channel in GIMP

How do I export a PNG image without alpha channel in GIMP? I have checked a lot, but I can’t find this. I found an option to export PNG images without alpha channel in Inkscape, but I am not familiar ...
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0answers
235 views

how do I import an eps into GIMP with a different background color?

I'd like to import an image into GIMP and have it antialiaed with a custom background color. I don;t see a way to import an eps that doesn;t automatically set the color to anti-alias against as white. ...
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0answers
119 views

Round sharp edges of icon using GIMP or PIXLR

I am trying to make icon and small clip-arts to use in my app but the artwork I import has very sharp edges and they screw up the cleanliness of the app. How to buffer the edges I am using Pixlr ...
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1answer
234 views

Editing PNG in GIMP: is it possible to remove lines (used as arrows) and extrapolate the now blank squares?

I'm using GIMP to prepare this PNG file for vectorization in Inkscape. I've noticed that the vectorization process makes removing these lines far more tedious after the vectorization than before. ...
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0answers
149 views

Gimp always displays the wrong color for transparent layers

I have a problem (which I had previously on completely another Ubuntu and older versions of Gimp [now I have the latest - 2.8.10]). When I open PSDs with transparent layers, they get displayed in a ...
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1answer
5k views

How do I insert arrows into a picture in GIMP?

I'd like to insert perfect arrows (the sort you can make using Inkscape: straight, symmetric tips, of customizable width and length, etc.) into images in GIMP. At the moment the closest thing to this ...
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1answer
34 views

How do I unselect items in GIMP?

I'm currently using GIMP to add text captions and lines into a screenshot. The problem is that once I finished one caption I couldn't add any more lines (using the Paint Brush tool). If I close the ...
0
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1answer
73 views

How to edit jQWidgets png files?

I'm using GIMP to do the editing in the png file I've shown below. On selecting one of the arrows and trying to paint it red, the colour just does not turn red. It stays grey. I'm just unable to make ...
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5answers
6k views

Gimp: Pick color on screen without taking screenshot

Sometimes I want to quickly use a color that I see on a picture, website or program. I usually take a screenshot then open it in Gimp and use the "Color Picker" tool. Is there another way to do this ...
7
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0answers
228 views

Is there a way to select multiple sprites from a sprite sheet in GIMP?

After you've made the background transparent, color selected the background and inverted the selection to outline all the character sprites: Is there a shortcut or some quicker method/program/tool to ...
4
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4answers
1k views

Gimp grid strange behavior - feature or bug?

When I create a grid in Gimp (a 32x32px grid with 0x0px offset), the distance between the top edge of the image, and the first grid line, is 31 pixels, almost like the grid starts one pixel above the ...
2
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1answer
304 views

GIMP: 'move layer' stops working

I'm having intermittent problems with GIMP, where the 'move layer' command suddenly stops working. The mouse pointer changes to the one below: When I make an explicit selection, e.g. CTRL-A on a ...
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4answers
29k views

How to select more layers with GIMP?

For example in Adobe Photoshop I would just shift+click. How do I do that in GIMP?
2
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1answer
698 views

What are useful brush dynamics and tool presets in GIMP 2.8?

In previous versions of GIMP only pressure was recognized by the brush tool. It wasn't much but it was simple. The new GIMP 2.8 introduces an all new brush dynamics system with a ton of customization ...
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2answers
248 views

Creating this 3d map perspective?

I am trying to create a custom image overlay on leaflet.js. For sake of learning something new, I am trying to lay over the co-ordinates on a 3D-looking map. For example (the map inside the red ...
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1answer
573 views

Importing eps files as layers in Gimp

I have been trying to create an animation using 300 eps files. When I try to open all the 300 files as layers (File -> open As Layers), a dialog box appears for each file with the heading "Import from ...
1
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1answer
87 views

How do you use a non-alpha channel selection with basic paint tools?

Get your selection > Save to channel > Set channel as selection How do you use things like pen, paintbrush, fill, exc. at this point? When I go to use them they are in my edit history but I don't ...
2
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1answer
90 views

Getting GIMP to recognize content outside old borders

I've been trying to create an image showing mitoxantrone (a chemo drug) intercalating DNA, as part of this I've had to combine two structures -- a DNA strand with the molecule found therein and the ...
2
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2answers
356 views

How to smooth a scanned image using Gimp

I have drawn an image which I then scanned into the computer and saved as a png. I just want to make the lines smooth on the image. The image is a logo Any help is much appreciated. I am using ...
19
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1answer
85k views

Make image partially transparent in gimp

I want my image to have 60% transparency. How can I do this in gimp?
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2answers
77 views

GIMP: Paint a selection and maintain various levels of opacity

I'm trying to recolor a png file using GIMP. The image I want to recolor is a solid color, but the edges are feathered with varying degrees of opacity to make the final image look smoother. is there ...
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1answer
702 views

Hard edges on bucket fill tool in Gimp

I am trying to fill a selected region using the bucket tool in Gimp. I want everything to have hard edges, no gradual shading unless I do it myself. However, when I fill the region I end up getting ...
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2answers
202 views

How can I do a global fuzzy select in GIMP?

How can I make the fuzzy select global in GIMP, so that it selects all of a certain color and not just contiguous regions? For example, if I drew multiple red squiggles, how could I easily select ...
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4answers
28k views

How do you cut out the centre of an image, bringing the edges closer together?

I need to cut a large number of columns out of a PNG image. The area I want to remove is in the centre of the image; I therefore want the left and right edges to be closer together after the cut. I ...
2
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3answers
746 views

Forget alpha instead of blending it in Gimp

It's now second time I need this so I'm posting it as a question: When a layer has alpha channel, some pixels may be transparent. I want to totally forget about the transparency. That means, render ...
2
votes
1answer
96 views

Transform/resize image for label printer using Gimp

Starting from an image like this one, how do I resize and transform it into something a label printer can use? That means a black and white bmp about 1/3 of this size. The best result I have so far ...
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1answer
313 views

How to match brightness between two different images using GIMP (Mac OSX)?

I took two pictures with my iPhone, one during the day and one at night. How do I make it such that the two images look like they were taken at the same time of day? Is there a compare two images ...
26
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4answers
93k views

Add transparency to an existing PNG

I'd like to use this image on a web site. What I need to do is change the background from black to transparent, so I can use the arrow on my site maintaining the page background. I used Gimp to ...
3
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2answers
253 views

Exporting square tiles from a stripe - in Inkscape or Gimp

I am using Inkscape and Gimp to create assets for a word game and am looking for an advice from more experienced users of these great tools. In Inkscape I have created a stripe with 26 letters and ...
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2answers
3k views

How to remove background with Gimp?

How to remove background from an image with Gimp?
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1answer
167 views

How do you describe the color characteristics of this gif palette and how do you change it?

Substrate by Jared Tarbell is a procedural art work in the Processing language that I'm discovering again. Here is a screenshot of the program's execution on my computer: The program uses a .gif ...
2
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1answer
2k views

Gimp smooth edges coloring

I have a PNG image with transparency. It is an icon of single color and I want to change its color. What I have done so far is, Select the area I want, either by Fuzzy select or the color select ...
4
votes
1answer
2k views

How to size canvas and add and retain full image in GIMP?

I am a GIMP beginner and have successfully created images with my desired transparencies in GIMP. However, I have problems with and can't seem to understand the ins-and-outs of image and canvas ...
0
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1answer
473 views

Keeping colors on an image while setting full transparency

I would like to create an image from a map, where each country is colored in a different color, where the frontiers are in black, and in which each color except black is fully transparent, while not ...
4
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1answer
130 views

Make a random dispersion of images

I got a lot of unique images, so my goal is distribute all that images randomly and apply randomly scale and rotation transformations. Like these So which is the best way to achieve these ? I use ...
0
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1answer
150 views

Given an image modification on Gimp, how to obtain the convolution matrix

In Gimp, there is a convolution matrix tool which lets the user define his own convolution matrix, and then see the result on the image. I am writing software for image classification, and I need to ...
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0answers
205 views

How to setup gimp to recognize input device changes inside of painting area?

Gimp only recognizes a change in input device (from pen to mouse) when the cursor leaves the painting area. If I paint with my pen, stop and then move my mouse it will move the cursor but the brush ...
0
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2answers
206 views

How do I further remove this background?

So, I have removed the background of the logo for my site, but the background of my site is a dark grey. As a result, the logo has a white border around it that looks messy. I use GIMP for editing and ...
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0answers
18 views

How do I get rid of the information in a photo in GIMP or Photoshop? [duplicate]

I have an image of an alarm clock that I want to use for my IOS app as an app icon but when displayed in the app it only shows a square that encompasses the photo. I want to know how to make it so ...
1
vote
1answer
99 views

Should there be “seams” at the edge of the “tiles” when I fill using an image as a pattern in Gimp?

I want to visualize what an image(768x1024) looks like when it's scaled down and tiled. I use Gimp, so I select, ctrl-scale to something small (whateverx180), select, copy, edit/paste as../new pattern ...
2
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2answers
563 views

How to prevent font blurring when scaling an image down

I'm creating a logo for a Youtube channel and it's a text logo. Youtube suggests you upload the logo at 800x800, so that's what I've been designing at in GIMP and it looks fine: However, the actual ...
5
votes
3answers
586 views

Using imagemagick to create vibrant images

I'm in the process of helping out a friend who has a bunch of inventory pics. Most appear faded/washed out, and generally dull. I really like the effect as described here: ...
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1answer
73 views

How can I create a specifically located line in Gimp?

How can I add a plain black line in an image in Gimp in specific pixel coordinates for example between (10,15)->(300,116)?
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3answers
923 views

Changing image color

I am by no means a Graphic Designer but try. I have an image I got from iconarchive and am trying to set the color to red (#840a0c) and setting transparent where there is white. I am using GIMP for ...
0
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2answers
682 views

.png's made in GIMP not coming out transparent

I've had this happen with more than one image lately. I open an image in GIMP with the purpose of making the background transparent. The first thing I do is Add Alpha Channel. I proceed to remove ...
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3answers
333 views

Convert .psd into .png without loosing shading and lightening

So I do not own Photoshop, but got a .psd file from my client to work with. I managed to use a online converter and get this .png out of it. What I additionally need though is the conversion of ...