Examine source code of Secure-Password-Gen

{
  "manifest_version": 3,
  "name": "Password Generator",
  "version": "1.2",
  "description": "Generate secure passwords easily. No data is collected.",
  "action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "hemantpandey@gmail.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "websites": "none",
        "user_data": "none",
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}