Irfanview is an excellent basic editor; I’ve used to for years; it’s dependable, allows all sorts of conversions (R->G->B, color to B/W, jpeg to tiff or gif or bmp and plenty of others.) Until I figured out I got better software from my camera manufacturer (thanks to this group, btw), I was pretty damned pleased with it. Not so much anymore, but as a starter (and free as in no spyware or viruses) program, I recommend it. I took the liberty of tweeking it with Irfanview, and came up with this: