On Thu, 1 Jul 2021, Cristián Arturo Ducoing Ruiz wrote: If you're editing a graph via the GUI with a view to having gretl save it to file, you need to use the font selection mechanism in the GUI editor. Than your choice will carry over to the PNG (or whatever) output. If you specify a font by editing the "set term" line in the plot commands window, then you'll need to save the gnuplot input file to disk and run gnuplot on it yourself. Gretl doesn't preserve anything from the user's "set term" line, since it may well be inappropriate given the choice of output format via the menu. One further suggestion: you can get gretl to save a graph as gnuplot input, as in gnuplot ... --output=mygraph.plt then take charge of the details (including the "term" line), and invoke gnuplot to produce the image in your format of choice. Allin