Source Manifest.json { "background":{ "page":"check.html" }, "browser_action": { "default_icon": "icon.png", "default_popup": "index.html", "default_title": "__MSG_title__" }, "description": "__MSG_extDesc__", "icons": { "128": "icon.png", "48": "icon.png" }, "name": "__MSG_extName__", "permissions": [ ], "update_url": "http://clients2.google.com/service/update2/crx", "version": "2.2", "manifest_version": 2, "default_locale": "en"} Read more