Handy Image Utility: PNGOUT
I heard about PNGOUT awhile ago but never really bothered to look into it. Sure, it can compress my PNG's but Fireworks does a decent job of that already. But in the comments of my last post, Which Image Format is Best, somebody again made mention of it.
The original utility is a command line tool but the guy who made it, Ken Silverman, also started up a company to produce a commercial version of it. PNGOUTWin is a Windows application that offers a nice GUI interface along with batch processing capabilities.
This is pretty handy at the end of a project to just drag all the PNGs from a folder into the app, get them shrunk, and then upload to the live server. I tried it quickly on my corporate page and noticed that it managed to compress my files anywhere from 5% to 15%. That's a decent result.
Much of this compression is due to removing internal comments and data that is not necessary, including gamma information. Internet Explorer can have issues with PNGs as background graphics and tends to render them darker than they should be. Removing the gamma data ends up solving this problem.
This inexpensive utility could likely find its way into my regular arsenal of tools.