Indexed PNG images

 If I resize PNG images of graphs from 'Gnuplot' using 'GIMP' then I need to change the image 'mode' from 'indexed' to 'RGB' to make the images readable when they are smaller. 


The images are then nicely 'interpolated' with a 'cubic' transform.


Unfortunately, changing the 'mode' makes the images much larger. So instead, I generate a fresh image from 'Gnuplot' using a smaller 'terminal size', having less 'tics' and breaking the 'title' over 2 lines.


But I later decided to convert the graphs to 'RGB' to try to make them easier for the browser to resize.




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