Is this for some pixel graphics type image ? Otherwise 1 pixel will hardly be noticed. If you want some sort of 'glow' that is going to be more than one pixel as well.
It would be best if you can give an example of the image(s) you are using.
In the meantime, just standard Gimp tools gets something simple like this.
It would be best if you can give an example of the image(s) you are using.
In the meantime, just standard Gimp tools gets something simple like this.