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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334 views

brightness-contrast does not operate on indexed layers

I want to darken a PNG image in GIMP. I open it and choose Colors | Brightness-Contrast. The application responds with the error message - "brightness-contrast does not operate on indexed layers". ...
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3answers
191 views

How can I multiply pixel values by a constant in Gimp?

In Gimp, how can I multiply the value of every pixel in a grayscale image by a constant value? For example, multiply each pixel by 2.
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1answer
302 views

How to draw icebergs like the following image?

I want to draw some icebergs in Gimp or Photoshop. In Gimp I tried Path Tool, and then I tried to fill in the colors with Bucket Fill, but this gave me a very bad result. So my question is if anyone ...
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1answer
333 views

How to create the drop shadow “We are Mozilla” effect?

The text "We are Mozilla" on this page: http://www.mozilla.org/en-US/ seems to have something of a "white" drop shadow effect that makes it seem embedded onto the page, somewhat. How can we ...
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2answers
161 views

How can I achieve the light arcing background in this image

I've tried finding a tutorial without any luck. Even if someone could describe the effect so I could better search for tutorials myself. I am trying to achieve the following effect as seen in the ...
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1answer
31 views

Is selective blur (this GIMP's one) available in Photoshop?

Here's how it looks like: http://docs.gimp.org/en/plug-in-sel-gauss.html It automatically blurs blurred parts of image, but preserving crisp edges and contrast. Is it available in Photoshop?
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1answer
44 views

Map borders on GIMP

I'm trying to create a map for Risk. I found an image scouring the Internet that fits what I want perfectly, except instead of having borders, each province is just a different color. I would like to ...
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1answer
135 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 ...
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1answer
78 views

GIMP: Possible to remove middle in picture? [duplicate]

As an example, is there an easy way to crop away the o's in the Google logo using Gimp? The result should then be "Ggle" with a smaller image width than the original because the o's are missing.
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2answers
418 views

Mathematical operations such as “Reflection in Line” with FOSS Linux tools such as Inkscape, Gimp or Blender?

In Gimp, I could do this by "Layer/Transform/180 rotation" and then "Layer/Transform/Flip vertically" -- and then with some mouse, putting things together but it is slow. I am now looking for simpler ...
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1answer
390 views

GIMP: find midpoint / arbitrary division between two points

How do I find the middle, or n/th division or percentage of distance between two arbitrary points in GIMP? Like, I have an object / a line of arbitrary length / two guides, placed in arbitrary place ...
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1k views

How do I create a rectangle with a trapezoid bottom in gimp?

Using gimp 2.6.11 on Windows. How do I create a rectangle with a trapezoid bottom? I understand to make shapes I should make a selection and then stroke it, but how do I make a selection of this ...
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717 views

How to mimic this text in Gimp?

I found this really cool text, and would like to use the style but for a different word. How can I do it in GIMP or pixlr.com?
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1answer
1k views

Fixing fuzzy text in an icon?

I have an icon that looks like it was shrunk from a larger image. How can I easily clean up the text to make it look sharper?
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1answer
23 views

GIMP: Select full (transparent) image

Not that good at GIMP, but I'm having an issue. I'm trying to copy from a transparent image to another, however it only copies the part that's not transparent. How can I make it also select and copy ...
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1answer
24 views

GIMP transparency is not working

I followed this tutorial on GIMP to make an image transparent. Here is a snippet of the original image opened inside Windows Image Viewer (so the grey background is part of Windows Image Viewer, I ...
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1answer
48 views

Error opening EPS in GIMP 2.8 [closed]

I'm attempting to import an EPS file into GIMP, but it fails. I'm running v2.8.19, and I've installed Ghostscript 9.14 (I think that's the version). I've also gone through setting up the System ...
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1answer
133 views

Scaled layer in background for 8 bit art

I want to create some 8-Bit artwork using gimp. Is it possible to open a larger, higher resolution image and have it transparently in the background while drawing the 8 bit representation of say, ...
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1answer
400 views

Gimp: how to remove background noise/artifacts and enhance handwritten text

I have a lots of scanned handwritten lecture notes (PDFormat) and I want to improve their readability (I have uploaded an example). In particular I'd like to remove the "squares" on the back. I would ...
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1answer
32 views

Add more white color to Gimp layer

How can I add more white color to a Gimp layer? What about adding other colors to it?
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1answer
36 views

How do I make the Airbrush tool size, match the size of the clipboard, in GIMP?

With GIMP, it is possible to select and copy a region of the image to the clipboard, and then use this region as the brush for the Airbrush tool. However, the size of the 'painted' region, is ...
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1answer
1k 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: ...
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2answers
892 views

'Add alpha to selection' for text contour border in Gimp, equivalent in Adobe Illustrator?

I made my old site logo in Gimp, it's basically white text surrounded by a black boundary that follows the contour of the text. I can describe this viscerally but there is probably a descriptive name ...
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1answer
464 views

How can I set opacity for an image in GIMP 2.6.x?

I've searched and found advice to use a GIMP layers dialogue in e.g. How do you get transparent colour on Gimp? However, in my version of GIMP (2.6.8 for Mac), Layers doesn't seem to be set up to ...
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1answer
62 views

How to duplicate noise similar to this black and white-picture [duplicate]

I want to do something similiar like this picture in Gimp (or Photoshop if required). Any ideas on how to proceed? Anything useful will be appreciated.
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1answer
78 views

How to avoid pixel shifting for embossed tiling in Gimp

I'm trying to create tiles with a cloud embossing. I generated the tiling clouds with filter > render > clouds , and then applied filter > distort > emboss. But the modified clouds ...
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1answer
992 views

How to keep the resolution of an image when scaling it in Gimp

I want to copy and paste one picture into another one using Gimp. I have a picture with 200x200 pixels and 72dpi. The 72dpi are not enough to print the image in the size specified in its header. ...
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1answer
447 views

Standard pixel density for print? [duplicate]

I have to design a flyer for half of an 81/2 x 11 page. It mostly has images but some text. And I'm designing it in GIMP. Is there an industry standard dpi for simple prints? It's not magazine ...
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1answer
847 views

How to edit a closed shape drawn by Path Tool in GIMP?

I created a custom shape with custom pattern with the following steps: Drawing the border lines with Path Tool Making a closed shape by Selection from Path Selecting the closed shape with Magic Wand ...
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2answers
141 views

Handling layers in GIMP

I'm a first time GIMP user. I have an image that contains a design that'd I like to copy on to a transparent background. therefore, I started tracing the design using the paint/pencil tool. now that ...
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1answer
2k views

Gimp: Copy layer 1 to layer 2's mask

Pretty straight forward question, say in Gimp I have an image with 2 layers in question, one is temporary, I want to use it as the mask for the other. How can I transfer a layer into the mask of ...
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1answer
421 views

How to specify a transformation in GIMP

I have a specific perspective transformation that I want to apply to an image. How can I enter the matrix values manually in GIMP instead of playing around with stretching the image until the numbers ...
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2answers
2k views

GIMP: creating a 1 pixel wide line

I'm trying to create 1 pixel wide borders for some web buttons. I've tried to use the GIMP path tool to do this but I can't figure out how to get it looking right. See attached image. 1 - copied from ...
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2answers
388 views

How to recreate this effect from Apple's GameCenter?

How could I recreate the background and the effect on the ribbons, borders, and "Other" text in this screenshot from Apple's GameCenter app? To me, the background looks a little glittery, but also a ...
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3answers
927 views

Gradient Brightness

I'm not particularly experienced in graphic design, so maybe there's an easy way to do this that I just haven't noticed, but... I have a layered PNG image in Gimp. It's a complex shape (a photo of a ...
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1answer
355 views

How does the GIMP function “perspective” work?

The function "perspective" looks like a 3*3-matrix with sine och cosines and is it translation, scaling, rotation, some combination or other? How does it work? Is "perspective" the real proper name ...
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2answers
641 views

Dotted square in gimp?

I've seen this effect on several sites, basically it's just a simple background with a bunch of dots, and I'd like to use this for a background for something but I don't know where to start!
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1answer
1k views

Can't see alpha channel in png using GIMP

I created an RGBA image as png file using Blender. When opening image with GIMP, not everything is visible. Here's the original png file created with Blender: Here how does it looks in GIMP: ...
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0answers
6 views

In GIMP, Is there an existing script-fu script that selects all non-background pixels?

Note:the background pixels are non-alpha. I can do this manually using only menu commands as follows (given that the image background color is already selected as my foreground colour): Select all ...
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0answers
8 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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0answers
29 views

How to paste / edit text in a PNG file using Gimp?

I have brought a PNG file off the Etsy website, and I want to add text on top of it, but once I added text it all distorts and it is very bad quality, but in another instance it did not and the image ...
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0answers
5 views

There's no drop shadow filter in Gimp [migrated]

I'm in Gimp 2.8 in OSX and trying to use the drop shadow filter. But it doesn't appear in the menu. From all accounts it should be there by default. Do I need to do anything to install/enable it?
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1answer
39 views

How can I prevent Gimp from automatically changing colors of a .png?

So I am editing a .png file from a website that I am working on. I downloaded the image (.png) and it has a yellow/green color in one of the objects. This color is important because it matches with ...
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1answer
36 views

A way to enhance scanned image with a low resolution photo?

So I have a lower resolution photo and a high resolution scan from a magazine that both picture the same thing. However, the scanned image is faded, has text, is not fully in color (parts are in gray) ...
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1answer
23 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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1answer
44 views

Change color of transparent element in GIMP

Someone created a logo for me, It's a one-color logo with some shiny effects as you see. Can I change the color of the logo without losing transparency or brightness? And which one I can change the ...
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1answer
58 views

GIMP: how to create a collage where the photos can be repositioned within frames?

I'm trying to create a collage with 3 photos in GIMP, and I want to be able to reposition the images within each frame, not just crop them to fit the frames. Here is a sketch of what I want it to look ...
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2answers
57 views

Photoshop - clear color data from transparent pixels

I have some images that have some transparent grey pixels, and when I make the picture larger, thoose pixels are visible a little bit. Is there a way to do this with Photoshop? In GIMP you can ...
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0answers
43 views

Compress png images with Gimp

I'm getting a message from PageSpeed Insights that recommends to compress some png images. E.g: If compressing .../logo.png without loosing information, you would save 1.014 B (12% redcuction). ...
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1answer
36 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 ...