Hi Mike! Make 'em jpeg format, very compact and universally readable. I make a copy of the original scan and work on that... straighten any tilted horizons, fix color balance & saturation, tweak the histogram in Levels to achieve full black and white at the extremes, scale to final dimensions at 72 dpi resolution, apply some edge sharpening or unsharp mask if necessary, put on a 2 pixel black border, and Save as jpeg "for the web"... in that order.
Those final dimensions... You want it big enough to see clearly and show off the quality, but not too big for folks with modest-size monitors to see the whole thing. I'd think about the smallest size to consider is 511 pixels on the long side. Over on Photo.net, for pics to appear in the forum discussions, the pic has to be less than 512 pixels wide AND under 100k in filesize. RFF doesn't have that limit, but a lot of my pics are saved that way for compatibility. I think about 800 or 900 pixels on the long side would be a good maximum dimension. Keeping the filesize down helps make a forum with pics open faster.
Have fun! 🙂
