Examine source code of Scryde Promocode

{
  "manifest_version": 2,
  "name": "Scryde Promocode",
  "version": "1.2",
  "icons": {
    "16": "images/scryde16.png",
    "32": "images/scryde32.png",
    "48": "images/scryde48.png",
    "64": "images/scryde64.png",
    "128": "images/scryde128.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "16": "images/scryde16.png",
      "32": "images/scryde32.png",
      "48": "images/scryde48.png",
      "64": "images/scryde64.png",
      "128": "images/scryde128.png"
    },
    "default_title": "Scryde promocode",
    "default_popup": "popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b24e2f26-ee31-4cf8-84bc-30e4089aaad7}"
    }
  }
}