title: Ruthlessly compressing large images for the web
body: <p>I have a very large background image (about 940x940 pixels) and I'm wondering if anyone has tips for compressing a file this large further than Photoshop can handle?  The best compression without serious loss of quality from Photoshop is PNG 8 (250 KB); does anyone know of a way to compress an image down further than this (maybe compress a PNG after it's been saved)?</p>
  
  <p>I don't normally deal with optimizing images this large, so I was hoping someone would have some pointers.</p>