Don't need to do anything special the Windows implementation of GIMP seems to be set to use any font in the fonts folder. Need to create a poster with a fancy font? Here’s how to quickly install fonts that you’ve downloaded into GIMP.
To make the background transparent in GIMP and save a transparent image, you need to save it in a certain format. The below procedure works for Ubuntu and other Linux distros like Linux Mint.
Installing a font file on Linux is a pretty simple process. If you are not satisfied with the available list of fonts in Ubuntu, you can install additionally from other sources. Ubuntu is a most user-friendly version of Linux and comes with a great list of fonts when you install.