jwp wrote:I don't have GIMP up on this box so I can't check, but isn't it just the "scale" tool (maybe preceded by "crop" to get rid of any unwanted edges)? If I remember correctly, that dialogue box gives you options about scaling by a percentage or setting absolute dimensions, and also forcing aspect ratio to be maintained.
GIMP has all manner of neat tools for doing this. Yes, one can crop the image, so I cropped it as small as I could. One can also resize it to any size, so I resized it to 80 pixels in height. When you then save it you can choose the resolution, so as to limit file size, but of course at low resolutions the image becomes too blurry to use. Using all of these tricks, I can get a JPG image down to about 40Kb in size. If I then save it as a GIF image, the size goes down to about 7 KB. But I simply cannot get it to drop off another Kb or two to get into the size range allowed by the board's software.
Will have to go try again and see what I can manage. It's not really a big deal; just a new self-portrait to replace the old one.