You can check the source: https://bitbucket.org/lekevicius/christmas-2013 https://bitbucket.org/lekevicius/christmas-2013 Basically, it's just a Rails app. No

You can check the source: https://bitbucket.org/lekevicius/christmas-2013 https://bitbucket.org/lekevicius/christmas-2013 Basically, it's just a Rails app. No front-end framework, just jQuery. Canvas is converted to base64, sent to server, server uploads to S3, user gets URL. Very simply, one day hack.