resizing an image to have smaller pixels?

If you have photoshop just go up to image->image size, and change it to the ammount of pixels that you want.

I don't know how to do it without Photoshop, that's what I use.

 

Then install the gimp: http://www.gimp.org/macintosh/

 

you can also resize in iPhoto. Drag into iPhoto and Export as 75x75. Though I recommend GIMP. Apple should include it on all Macs, that'd be rad - since they lack a painting app.

 

Apple should really give people a basic image program to muck around with. iPhoto and Image Capture are the two you can use, but I don't think you can use image capture in this case, so iPhoto is your best bet.

 

if it's a PowerMac/Book and relatively new, it should have GraphicConverter on it, which will also do the trick.

If you right-click (or control click, for you one-buttoners) on a JPG, are there any options to "Open With" that you haven't yet explored (aside from one you know won't let you resize)?

 

A wonderful app for those who've neither the cash to buy nor bandwidth/inclination to steal a copy of Photoshop.

BTW, (I could be wrong) there's no such thing as making pixels smaller (unless you're talking about the physical pixels on the display itself ).

You can reduce image size to use less pixels (which is what you're talking about), but a pixel is a pixel is a pixel.