This is a great free alternative to Photoshop or other imaging software if you just want to do some simple resizing of photos, logos etc.  I usually get a hires image, e.g. EPS format (Encapsulated Postscript) and need to resize it and save it as a PNG or JPEG for a web site. If you are using Windows I recommend using IrfanView.

1. Download and install IrfanView

2. Download and install the IrfanView plug-in pack (for Save as PGNG/JPG/GIF support and other stuff too)

3. Download and install Ghostscript (for EPS support)

Current versions of Irfan View and plugins are 4.33, Ghostscript is 9.05. All 32-bit Windows.