Hi, I created this issue today: https://issues.apache.org/jira/browse/CB-5692 Add icons to firefoxos and add "icons" field to manifest.webapp https://developer.mozilla.org/en-US/Apps/Developing/Manifest "icons": { "30": "icon-30.png", "60": "icon-60.png", "128": "icon-128.png" } cheers Axel