For a web-based solution on either PC or Mac, you can also use the free image editor at pixlr:
Pixlr Link
Same idea, but you can open an image from URL or your computer, scale it down [Image - Image Size - (make sure "constrain proportions" is checked) - decrease either pixel value], or crop it [drag the box over the area - image - crop -click "yes"]. Save your image and you're good to go.
A lifesaver if you've ever blogged full-time, accessible on any kind of machine, and pretty easy and intuitive, too.
Hope this helps, gents...
Vigo
Pixlr Link
Same idea, but you can open an image from URL or your computer, scale it down [Image - Image Size - (make sure "constrain proportions" is checked) - decrease either pixel value], or crop it [drag the box over the area - image - crop -click "yes"]. Save your image and you're good to go.
A lifesaver if you've ever blogged full-time, accessible on any kind of machine, and pretty easy and intuitive, too.
Hope this helps, gents...
Vigo