In Chrome if you try to local File | Open you'll get this error: Cross-origin image load denied by Cross-Origin Resource Sharing policy. Instead, run starman scripts/app.psgi http://0.0.0.0:5000/ More info: http://stackoverflow.com/questions/20165063/three-js-cross-origin-image-load-denied-by-cross-origin-resource-sharing-policy https://github.com/mrdoob/three.js/wiki/How-to-run-things-locally http://modernperlbooks.com/mt/2011/08/serving-a-local-directory-with-plack.html