Examine source code of Redirects Blocker Pro

{
  "manifest_version": 2,
  "name": "Redirects Blocker Pro",
  "version": "1.4",
  "description": "__MSG_extDescription__",
  "permissions": [
    "tabs",
    "<all_urls>"
  ],
  "icons": {
    "64": "icon.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_title": "__MSG_actionTitle__",
    "default_icon": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "stopper.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{43bad8c5-6942-4024-aeb5-cfc66c1434b6}",
      "strict_min_version": "111.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "default_locale": "en"
}