manifest.json

{
    "name": "IDN Notification",
    "version": "1.0",
    "description": "Notifies when IDN domain is visited",
    "manifest_version": 2,
    "incognito": "split",
    "permissions": ["tabs", "webNavigation"],

    "page_action": {
          "default_icon": {
            "16": "images/grey-16.png",
            "24": "images/grey-24.png",
            "32": "images/grey-32.png",
            "64": "images/grey-64.png",
            "128": "images/grey-128.png",
            "256": "images/grey-256.png",
            "512": "images/grey-512.png"
          },
          "default_title": "IDN domain detector",
          "default_popup": "popup.html"
    },

    "icons": {
      "16": "images/grey-16.png",
      "24": "images/grey-24.png",
      "32": "images/grey-32.png",
      "64": "images/grey-64.png",
      "128": "images/grey-128.png",
      "256": "images/grey-256.png",
      "512": "images/grey-512.png"
    },

    "background": {
      "scripts" : ["js/background.js"]
    }
}