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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340 votes
4 answers
1.5m views

Making the background of an image transparent in Gimp

I have some jpg images and I need for each of them to have a transparent background. I have GIMP as a graphic tool. I need to put them in a web page and I need to see just the main element and have ...
  • 3,411
92 votes
8 answers
263k views

How to select more layers with GIMP?

In Adobe Photoshop I am able to select multiple layers at once with Shift+Click. How can I do that in GIMP?
  • 1,107
81 votes
2 answers
78k views

GIMP "color to alpha" is not selectable

Do I have to do something "special" to get the Color -> Color to alpha menu option to work in GIMP? I am trying to convert a background color on a GIF image to transparent by converting the background ...
  • 913
80 votes
1 answer
112k views

GIMP: Trying to move selected text layer but moves background layer

I have a background overlay on which I have three text layers on top. Now I want to move these text layers around on the overlay, but I can't get it to work. As soon as I click inside the text layer ...
71 votes
5 answers
237k 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 ...
  • 813
62 votes
4 answers
88k 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 ...
  • 723
59 votes
3 answers
138k views

Crop a big picture into several small size pictures

Is there a a way with GIMP editor to crop a big picture into several small equal sized pictures? So when all those small pictures connected in order would make a big picture.
55 votes
1 answer
173k views

Make image partially transparent in gimp

I want my image to have 60% transparency. How can I do this in gimp?
  • 1,467
53 votes
8 answers
18k views

Q: Gimp vs Photoshop

I have been using Photoshop since the beginning of time. Other than the infamous Paintshop Pro, it is the only image editor I have used. I am about to embark on an adventure of trying out GIMP as a ...
  • 1,697
46 votes
2 answers
150k views

how to make a color transparent in GIMP

I realize there are a ton of questions like this, but they are all way overcomplicated for what I am trying to do. What I want to do is very simple. I want the background of my image completely ...
  • 563
44 votes
5 answers
119k 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 ...
  • 1,547
42 votes
3 answers
181k views

Gimp - Using an image as the transparency layer of another image

I have two images (For the sake of simplicity, Image1 and Image2). I want to use Image2 as a transparency for Image1. How can I do that? Assume I've done little more with Gimp than play with some ...
40 votes
9 answers
76k views

Professionals: Would you choose GIMP over Photoshop and/or Inkscape over Illustrator?

I know Adobe's solutions are more advanced, but, as professionals, do you think you would survive (against competition) using GIMP and/or Inkscape instead of Photoshop and/or Illustrator for your ...
38 votes
2 answers
86k views

GIMP: How to move a selection in a layer?

I'm having a weird behavior when trying to move a selected rectangle or polygon in a layer. I do the next: 1. Select layer. I want to move the shine that belongs to the brillos y manchas layer: 2. ...
  • 635
32 votes
1 answer
66k views

Why is the Gimp selection pane not going away?

I needed to move something so I copied it and pasted it to its new location and now where I have pasted it there is a selection pane that will not go away. I've tried to move the pane and tried the "...
30 votes
8 answers
54k views

How do I directly set layer positions in Gimp?

I'd like to directly set (i.e. type in actual coordinates of) the position of my layer in the image, like you can with the selection box: (Not the size, but that would also be cool) Is this possible?...
  • 403
29 votes
3 answers
111k views

Gimp: how to combine two images side-by-side

I've recently drawn 2 images and for the final product I need to combine half of each images, one on the left and one on the right, into a single image.
  • 291
29 votes
2 answers
42k views

Can I change the default Gimp transparent background to white?

I'm using Gimp 2. The default grid-style transparent background makes it incredibly difficult to get a sense of what the image will actually look like, when I finally display it over a background. Is ...
27 votes
2 answers
44k views

How to use- "color to alpha" in GIMP when it is grayed out? [duplicate]

While you try to change the background to transparent- the filter "color to alpha" is not selectable. How to get that changed.
26 votes
5 answers
4k views

What's the most efficient way to "blank" old comic word balloons while retaining paper texture?

I'm taking very old (1940s and '50s) comics and trying to remove the text from some of their word balloons. I don't want to just erase their contents to pure white space, though, as the paper colour ...
26 votes
3 answers
33k views

How to copy a layer group to another image in GIMP?

In GIMP I have 2 images with exact same size and properties but different layers. Now I have a relatively large layer group, which I would like to copy to the other image. As usual I copy and paste it....
26 votes
6 answers
62k views

How to convert old scanned documents into black and white

I have some old documents that have been scanned, and I want to convert them to black and white. Content should be always black, and background white: I use Photoshop.
25 votes
7 answers
23k views

GIMP - change color of object preserving feathering

I have an .xcf image and I like to change the color of some objects within it. The objects are mostly one solid color with the edges feathered into transparency. I.e. all pixels in the object are ...
24 votes
4 answers
50k views

Get difference between two images as transparent image in GIMP

I have two images A and B which are similar in many regions. I want to create an image C so that B = C on top of A where C should be as transparent as possible. on top of is the normal layer ...
  • 415
24 votes
4 answers
38k views

GIMP - How do I change UI DPI?

This is a problem I have been having recently. My screen size has a pretty high pixel density and, as a result, all of GIMP's icons are criminally small and very difficult to look at. I've tried ...
24 votes
1 answer
118k views

Make an outline with GIMP, like in Photoshop

How do I add a stroke to a layer in GIMP?
23 votes
2 answers
26k views

Why does my transparent PNG not look good?

I want to convert a JPG to transparent and using GIMP I added alpha layers and transparency same way I make a GIF transparent I converted it to PNG but it doesn't display well when I load it on my ...
22 votes
3 answers
2k views

Generate colorful streamline pattern (using FOSS)

I found a very interesting pattern, which I would like to recreate: Source I tried to start with the RGB-Noise filter of Gimp, but didn't get a comparable pattern so far. I understood, that there ...
  • 323
22 votes
5 answers
34k views

In GIMP, how to colorize using a reference color?

I have an image I wish to colorize using a picked color. What is the handiest/easiest way to do this in GIMP? I've tried my best by checking the palette for my picked color's HSV, then using it as ...
22 votes
1 answer
69k views

How to resize canvas and background layer in GIMP?

I want to reduce the canvas size (and the background layer) from 500×500px to 16×16px. How to resize the canvas in GIMP?
  • 349
22 votes
2 answers
43k views

Make a selection of image transparent in GIMP [closed]

I have a picture and I want to have one specific rectangle of this picture appear 50% opaque. The rest remains as it was. How do I do this in GIMP?
  • 323
21 votes
2 answers
38k views

Gimp Pasted Layer Move Tool

What I want to do is paste a picture to a new gimp file. I have the background layer and when I paste it puts it into the floating selection like expected. I found that I'm supposed to turn it into a ...
  • 355
21 votes
4 answers
70k views

How to create a one pixel pencil brush in Gimp?

I have googled this and found a number of answers and videos which all say that this can be done by setting the brush size slider in the brushes panel or brush editor panel. I'm either clicking on ...
  • 391
21 votes
3 answers
15k views

Gimp: How to export images at a specific dimensional size

Does Gimp provide a way to export an image at a desirable dimensional size, and still preserve the original size while working in the UI? I need a scaled down version of a file I am currently working ...
  • 459
21 votes
1 answer
985 views

How to get standard results in colour management in Linux

I have recently calibrated and profiled my screen, with a ColorHug device. I'm using Gnome, and have the profile installed through gcm. When opening an image in GIMP and DigiKam, the results are ...
20 votes
7 answers
48k views

Annoying GIMP issue (fill bucket with a circle-slash icon on the cursor)

I am trying to bucket fill a layer, but I get this crazy cursor I cant get rid of. I think its because I have something selected. I tired Select All, Select None, but the cursor does not change. I ...
  • 357
19 votes
3 answers
20k views

How to edit existing rectangle selection in GIMP?

I have a rectangle selection. As long as I stay on the rectangle selection tool I can click in the rectangle to change the size. If I switch to another tool (e.g. move tool) and then come back to ...
  • 601
18 votes
3 answers
74k views

GIMP: How to crop a layer?

I have a screenshot where I want only a part of the pasted image, and I want to turn the white that's in it transparent. First I need to crop the pasted image. I have selected the layer and a ...
  • 283
17 votes
5 answers
132k views

Replace black background with a transparent background

How can I add transparent background on this image instead of black background, but I also would like to keep the partial transparency effect on some of the particles and particles borders. Could you ...
  • 273
17 votes
6 answers
25k views

Why can't the GIMP align tool select some layers?

When I try to align various layers in GIMP 2.8, sometimes the align tool selects the entire image, not the layer I clicked on. It doesn't matter how many times I try, and closing/reopening doesn't ...
  • 173
17 votes
2 answers
22k views

Erase a single pixel in GIMP

I am trying to illustrate in GIMP 2.8 with pixel-perfect precision. The pencil tool allows me to fill in a single pixel without any fuzzy edges or anti-aliasing. However, the eraser tool operates more ...
  • 173
17 votes
2 answers
37k views

How do I draw horizontal/vertical straight line in GIMP?

you can consider me new to GIMP. I've tried by holding Shift key, can draw straight line but I want a straight horizontal/vertical line. So, How can I draw straight vertical/horizontal line?
  • 471
16 votes
11 answers
16k views

Should I (a web designer) stick with gimp, or buy Photoshop?

I am a web designer. I do not use/own any adobe products... except for watching flash videos online of course. I currently use gimp 2.6 for my graphic needs. It's free and I know how to use it. The ...
  • 1,467
16 votes
4 answers
73k views

Cleaning up line art with choppy edges

So, a while back I created this icon from a game, but looking back on it behind a white background instead of an alpha-channel its edges are super choppy in some places while it's smooth in others, ...
  • 263
16 votes
1 answer
12k views

What algorithm do the NoHalo and LoHalo resize methods use in GIMP?

The GIMP resize tool used to have only None, Linear, Cubic/Bicubic, and Lanczos, which are reasonably well documented algorithms that one can do research on, if one is so inclined. I can't find any ...
  • 298
16 votes
1 answer
12k views

How do you set the default text size in Gimp 2.8 for Mac OSX Mountain Lion?

I am using Gimp 2.8 for Mac OS X, and I would like to change the default text size from 18 pt to 36 pt, so that I don't have to highlight the text and manually change every time I create a new text ...
  • 401
16 votes
1 answer
19k views

How to quickly set GIMP selection aspect ratio to that of the image?

If I don't know the aspect ratio of an image, what is the most efficient method to set the selection aspect ratio to that of the image? The fastest I've found (not fast at all) is to look at the ...
  • 263
15 votes
3 answers
58k views

How to make an animated gif with a transparent background without overlap?

When I try to make a gif with two frames both of which have a transparent background in GIMP, what happens is that the first frame looks OK, then the second frame appears on top of it, such that you ...
15 votes
2 answers
17k views

how to display current colour values of pixel under cursor in gimp?

Is there a way to display the colour values of a pixel currently under the cursor? I've seen that in different other software. Why do I need that? I have to clone textured areas in a picture. But ...
  • 417
15 votes
3 answers
23k views

How can I map the colors in a greyscale image to a specific color gradient?

I’m attempting to add color to some greyscale icons (i.e. all three channels are identical). I want to map the colors such that the brightest grey becomes one specific color, the darkest grey becomes ...
  • 253

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