The first of several projects I've been working on with former colleagues Ed Eliot and Cyril Doussin is now live as part of Project Fondue, which is a place where we're collaborating on various projects both as online tools and services as well as open source projects.
The favicon generator is a simple tool to make generating favicons from any graphic a breeze:
Although many modern web browsers support favicons saved as GIFs, PNGs or other popular file formats all versions of Internet Explorer still require favicons to be saved as ICO files (a Microsoft icon format). This tool provides an easy way to convert any GIF, PNG or JPEG to ICO which is supported by all modern web browsers. It also enables you to create favicons from scratch via a handy online editor. Additionally the editor lets you manually tweak generated favicons to ensure the best possible result.
The main difference with the tool is that we've provided an editor which allows you to tweak the generated icons which is often necessary particularly if you're creating a favicon from a much larger graphic.
The Favicon Generator is available at http://favicon-generator.org/