Ishimaru-Design > Home > Tutorials > GIMP > A backgrounds with seamless edges

[GIMP] A backgrounds with seamless edges

  • Author : Ishimaru Chiaki
  • Posted on : 2013-10-24 03:32:54
  • Updated on : 2013-10-24 03:32:54
  • Comments : 0
  • Type : Backgrounds
  • Level : Newbie
  • Version : 2.2.x

What is more annoying than visible edges when your textured background is repeated ?  This tutorial shows you how to make a brush-based background using a very handy feature in GIMP to make those edges seamless.


  1. Seamless background how-to

Seamless background how-to


When we make a forum or a website where you put a mosaic-like pattern as background image, the most common problem is the fact of having visible edges when the pattern repeat itself.

With this tutorial, I will show you how to create your own patterns without having these horrible visible edges.

Here we go !

Open a new 400*400 pixel document (File > New)

Once the document created, choose the color which will be the pattern's background.  For example, I choose the color 9fdcff which is a soft lightblue.  Fill in the whole background with this color using the bucket tool or doing Edit > Fill with FG color or BG color (as long as it's the blue one).


Now, create a new transparent layer called "Brush"

Now, take the Paintbrush tool and choose a custom brush which is smaller than the document (if you haven't installed any, look in my "install brushes" tutorial).
Then, choose a darker or lighter color for your brush.  On my side, I chose white.
Apply your brush in the middle of your pic.


You can then play with layer modes, feel free to do it or not wink  On my side, I set it as "Grain Extract".


Duplicate your layer.  We'll now offset it.
Go to Layers > Transform > Offset
As offset value, set the half of the image's total dimensions in both fields (on my side, I put 200px, since my pic is 400*400 big).  Validate.

Result :

You can also offset it only vertically or horizontally, or even combine them all. ^^

Here are the variation I have done.




All of them (in this case, duplicate the layer three time and apply them a different offset)

I know, the result isn't extraordinary, but you can choose the dimensions, colors and brushes you want since this technique leaves a large place to creativity. ^^

Now, all is left is to save your document under .png ^^  Save a .xcf copy if you think you will work on it later.