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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343 votes
4 answers

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 ...
Viola's user avatar
  • 3,441
95 votes
8 answers

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?
p1100i's user avatar
  • 1,147
81 votes
2 answers

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 ...
NealB's user avatar
  • 913
79 votes
1 answer

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 ...
AndroidHustle's user avatar
72 votes
5 answers

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 ...
Paolo's user avatar
  • 823
63 votes
4 answers

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 ...
geert3's user avatar
  • 733
60 votes
3 answers

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.
Khulja Sim Sim's user avatar
56 votes
1 answer

Make image partially transparent in gimp

I want my image to have 60% transparency. How can I do this in gimp?
Web_Designer's user avatar
  • 1,487
52 votes
8 answers

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 ...
Electron's user avatar
  • 1,667
49 votes
5 answers

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 ...
Josh Pinto's user avatar
  • 1,647
49 votes
2 answers

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 ...
ewok's user avatar
  • 593
46 votes
4 answers

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 ...
Narf the Mouse's user avatar
41 votes
9 answers

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 ...
dukeofgaming's user avatar
39 votes
3 answers

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.
Alina's user avatar
  • 391
38 votes
2 answers

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. ...
Manolo's user avatar
  • 645
36 votes
1 answer

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 "...
Richie Cross's user avatar
33 votes
8 answers

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?...
Aralox's user avatar
  • 433
32 votes
3 answers

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....
Saren Tasciyan's user avatar
30 votes
2 answers

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 ...
Josef Krazinsky's user avatar
29 votes
2 answers

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.
Tania Chowdhury's user avatar
29 votes
4 answers

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 ...
Emerald Eel Entertainment's user avatar
28 votes
4 answers

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 ...
Jonas Sourlier's user avatar
26 votes
5 answers

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 ...
JeanSibelius's user avatar
26 votes
6 answers

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.
user2496077's user avatar
26 votes
3 answers

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 ...
klewis's user avatar
  • 563
25 votes
7 answers

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 ...
spiderplant0's user avatar
25 votes
1 answer

Make an outline with GIMP, like in Photoshop

How do I add a stroke to a layer in GIMP?
Keith Groben's user avatar
24 votes
1 answer

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?
Casper's user avatar
  • 369
23 votes
2 answers

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 ...
Niklas Rosencrantz's user avatar
23 votes
2 answers

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?
tw-S's user avatar
  • 333
23 votes
1 answer

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 ...
Matt's user avatar
  • 368
23 votes
5 answers

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 ...
mallardz's user avatar
  • 411
22 votes
3 answers

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 ...
n4pK's user avatar
  • 323
22 votes
5 answers

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 ...
Jani Uusitalo's user avatar
21 votes
9 answers

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 ...
Siddharth's user avatar
  • 377
21 votes
2 answers

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 ...
James's user avatar
  • 355
21 votes
1 answer

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 ...
artfulrobot's user avatar
19 votes
1 answer

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 ...
dixonjm's user avatar
  • 193
19 votes
3 answers

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 ...
User's user avatar
  • 611
18 votes
5 answers

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 ...
michael's user avatar
  • 283
18 votes
3 answers

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 ...
Steven Lu's user avatar
  • 283
18 votes
5 answers

How to add a simple border into an image in GIMP

I'm very new to GIMP and found that doing simple stuff in GIMP is much harder than it should be. All I want to do is add a simple black border around an image layer. I have added this image using the ...
Yahya Uddin's user avatar
18 votes
6 answers

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 ...
Réka's user avatar
  • 183
18 votes
2 answers

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?
Pandya's user avatar
  • 501
17 votes
3 answers

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 ...
Ben Blank's user avatar
  • 273
17 votes
6 answers

How do I brighten a part of a picture with Gimp?

Say I wanted to bring out the colors in the shadowy bottom right hand part of the attached image, how would I go about it? I assume I need to restrict the processing to that part but I have no idea ...
Johnny's user avatar
  • 271
16 votes
11 answers

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 ...
Web_Designer's user avatar
  • 1,487
16 votes
4 answers

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, ...
Jacedc's user avatar
  • 263
16 votes
1 answer

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 ...
Alex319's user avatar
  • 411
16 votes
1 answer

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 ...
l0b0's user avatar
  • 263

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