To be honest, it’s not often that I have to create favicons, but that’s one of the reasons I created the app. Prior to creating the app, I had to try and remember (read as lookup via Google) some archaic ImageMagick command, or use one of the many ad-ridden web services, and neither was a pleasant experience.
Also, when I was using OS X, I really liked the fact that the App Store was full of little apps that were designed to perform a single task. I’d like to see more of that for Ubuntu, so Faviconator and pwgenGUI are contributions towards meeting that goal.
Anyhow, if you’d like to try the app, you can find more details here.