Let’s learn easily and quickly how to create a polka dot pattern in GIMP. This is a quick guide which is easy to follow both beginners and advanced users of the image manipulation program GIMP.
Don’t worry though, I’ll use plenty of screenshots so you can follow along. The only parts I’ll skip are opening the program and creating a new file. I assume you can do this. :3
Alright, I assume you’ve opened the program. Create a new image and choose 100×100 as its size.
Now create a new transparent layer.
We’re going to create guides by going to Image -> Guides -> New Guide (by Percent)….
Leave the position to 50%.
Now do the same thing again, but change the direction to Vertical.
Go to View and make sure Snap to Guides and Snap to Canvas Edges are enabled.
Now we’re going to create the dot for the polka dot pattern.
Please choose a 100% hardness brush and set the color to your liking. I will be using White as foreground color, so I’ll make the Background layer invisible for now by clicking on the Eye next to it. (Otherwise I won’t be able to see my dots!)
Brush size: what you prefer… I’m going to use 40px this time.
Move your brush to the Guide Lines, halfway over the image to place a dot four times as you can see in the image above. Because you have Snaps turned on, you’ll notice that your cursor gets ‘stuck’ in the right position for this.
Your image is ready to be turned into a pattern.
Go to Filters -> Map -> Tile.
Set it to whatever size you’d like your pattern to be and click ‘OK’.
It will create a new image with your pattern.
You can now add a layer under it (because this layer is transparent) with a background color of your choice.
I used this method to create the background for my Kawaii Pudding picture.