Examine source code of VOEC Indicator

{
  "page_action": {
    "browser_style": true,
    "default_icon": "icons/skatt.svg",
    "default_title": "VOEC"
  },
  "manifest_version": 2,
  "name": "VOEC Indicator",
  "version": "1.0.6",
  "description": "Indicate if the current website is registered in the Norwegian VOEC registry",
  "icons": {
    "48": "icons/voec.png"
  },
  "background": {
    "scripts": [
      "voec.js"
    ]
  },
  "permissions": [
    "tabs"
  ]
}