Examine source code of iMacros for Firefox

{
  "manifest_version": 2,
  "content_scripts": [
    {
      "js": [
        "content_scripts/incognito_handler.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "run_at": "document_start",
      "match_about_blank": true,
      "all_frames": false
    },
    {
      "js": [
        "content_scripts/bookmarks_handler.js",
        "content_scripts/si_listener.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "run_at": "document_start",
      "all_frames": false
    },
    {
      "js": [
        "utils.js",
        "content_scripts/connector.js",
        "content_scripts/recorder.js",
        "content_scripts/player.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "description": "Automate your web browser. Record and replay repetitious work",
  "name": "iMacros for Firefox",
  "version": "10.1.0.1485",
  "homepage_url": "https://imacros.net",
  "browser_action": {
    "browser_style": true,
    "default_title": "iMacros for Firefox",
    "default_icon": "skin/imacros-icon.svg"
  },
  "background": {
    "page": "bg.html"
  },
  "options_ui": {
    "browser_style": true,
    "page": "options.html"
  },
  "permissions": [
    "sessions",
    "tabs",
    "bookmarks",
    "management",
    "proxy",
    "cookies",
    "browsingData",
    "webNavigation",
    "notifications",
    "webRequest",
    "webRequestBlocking",
    "nativeMessaging",
    "downloads",
    "contextMenus",
    "menus",
    "clipboardWrite",
    "clipboardRead",
    "<all_urls>"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "applications": {
    "gecko": {
      "id": "{81BF1D23-5F17-408D-AC6B-BD6DF7CAF670}",
      "strict_min_version": "56.0"
    }
  },
  "icons": {
    "16": "skin/logo16.png",
    "48": "skin/logo48.png",
    "128": "skin/logo128.png"
  },
  "web_accessible_resources": [
    "skin/logo24.png"
  ]
}