Examine source code of Scroll Saver

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "1.2",
  "icons": {
    "48": "img/icon.png"
  },
  "permissions": [
    "storage",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scroll-saver.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "applications": {
    "gecko": {
      "id": "{e3c82078-678f-4e02-a384-52295bb0bcb1}",
      "strict_min_version": "96.0"
    }
  },
  "browser_action": {
    "default_icon": "img/icon.png",
    "default_title": "__MSG_actionTitle__"
  },
  "default_locale": "en"
}