There are three versions of vector images in this project. * ai - Adobe Illustrator format * pdf - Adobe Reader format * svg - Scalable Vector Graphics To submit modifications for the logo 1. Fork or Download the git repository from GitHub 2. Pick a format you are comfortable working in 3. Make your modifications 4. Make sure to reexport the SVG 5. Send a pull request (if you forked) or post a new message to the Redmine Logo thread on the forum http://www.redmine.org/boards/1/topics/1183 Thank you for contributing.