I'm totally inexperienced with GIMP but I chanced upon this recipe that would meet my needs for a rather big project I'm currently doing. It's about cleaning scanned magazine pages where the print on the back side shines through the thin paper making the reading less enjoyable.

GIMP Recipe:

1. Open a file.
   
2. Convert your document to grayscale: Image - Mode - Grayscale.
   
3. Select the background color: Select - By Color, click with mouse pointer on the color of the background.
   
4. Invert the selected color: Select - Invert.
   
5. Copy the selection: Edit - Copy.
   
6. Create a new file: File - New.
   
7. In the dialog of a new file, in field: Advanced Options choose: Fill with: White, hit Ok.
   
8. Click anywhere in the window of the new opened document, just to choose it.
   
9. Paste the content of a clipboard: Edit - Paste.
   
10. Add a new layer to enhance the black text: Layer - New from Visible, in the layer's palette, in field: Mode: choose Multiply.
    
11. Combine two layers: Layer - Merge Down.
    
12. Save the result as a JPEG file: File - Export As, choose jpeg and set the quality at least 60.
    
    

•  When getting to "Combine two layers: Layer - Merge Down." the Merge Down option is grayed out so I can't apply that step.
  

•  When selecting a background color to be - erased/turned to white - what would be the best way to pick a wider range of grayness than the rather sparse instruction the recipe suggests "By Color, click with mouse pointer on the color of the background."
  

so ive just installed gimp and it my first time using gimp or any program like it. ive done my homework on how to setup my drawing tablet for gimp and once i configure my tablet for gimp and try to draw with it the courser and brush positions dont match up and all my pen tries to do is right click. ive already tried to set my buttons among other tips and nothing seems to work. im running 2.8 gimp on windows 10 with the 10x6.25in monoprice graphic drawing tablet can anyone think of why that is or direct me to an answer? thanks

I'm trying our IR photography and use Lightroom, but I've been using Gimp to swap the red and blue channels.  Works great, but I noticed that it doesn't seem to work right if I export the image from LR in Adobe Pro RGB colorspace.  When I do this, and swap the colors in Gimp, they look off.  The sky should be blue, but it looks more blue/green.

If I export the image in sRGB, the swap works as it should.  Any idea why this happens?

Hi!
I am having a problem with tagging tool preset. Let's say I have two brushes (Sketch Pencil, and Oil Brush) that are not related or even next to another in the tool preset window. Now, let's say I want to tag Oil Brush with a new tag, painting. I click on the Oil Brush Preset, and type painting into the tag window, then press Enter. Now that tag appears in the tag box. Then, if I filter my presets by "painting", instead of Oil Brush showing up, Sketch Pencil shows up. If I click on sketch pencil, "painting" does not show up in the tag box, but it does show up in the Oil Brush tag box. What is going on? 
Thanks for all your help in advance!

Hi,

I am new to Gimp and I would really like to know how to edit this blank template to look like the finished image below it.

How to change one color in the image with another?

Updated today to Gimp 2.9.7 from 'buntu ppa

This is the blend (gradient) tool, The ability to paint a gradient directly onto the canvas is not new, but I do not know how long editing a gradient in place has been there. Adjusting the colour stops, now shows up straight away in the tool.
The gradient file - something.ggr does of course, have to be in your Gimp profile gradients folder, to be editable.



Developers are threatening to include this in an updated Gimp 2.8.(24?) sometime.

For a while my browser has been crashing on me or 'not responding' but eventually it did. I think I have fixed that now by resetting the browser but now Gimp is doing something very similar. Nearly every-time I run a filter within gimp (It doesn't seem to happen with GMIC) the status bar at the bottom doesn't complete. Sometimes the operations complete and often they do not. 


I don't have a screensaver running on my computer so that is not using up room. I have only used about half my storage too - over 200GB is left on it. Surely I don't use 200 hundred GB to browse the net? My question would be  - what do you think the problem is?

I am using a relatively new gimp 2.8.22
Am afraid to add any more scripts now incase my pc cannot handle it.

My OS is Windows 10 Home 32 bit

I have 256*256 image.
I would like to offset it in a way that Gimp creates 512*512 canvas with 4 images (256*256) offseted.

ello all,  I recently got into the t-shirt design hobby/business.  I downloaded gimp and have been using it to turn my hand drawn art into computer based art for Tee Spring, Society6 and many more.  The issue I'm having is that for some reason my lines (mainly the curved lines look pixelated.)  after seeing many videos on how to change the DPI on gimp I keep only seeing how to only change PPI. 

I did notice that to change the PPI it automatically changes the art design to smaller dimensions is that why I get's pixelated because its being stretched on the t-shirt?  What is also weird is that when I make the art larger to where it bleeds out of the printing zone the pixels seem to be more smooth.  (the following pictures are for examples only and not the actual design)

so my questions are:
Can I create art on gimp for t-shirts that will be printed on Society6,Tee Spring, Red Bubble etc.?  If so can someone please give me detailed instructions how to fix the issue or maybe even a video link to one.
Thank you for your time.