Examine source code of Extension

{
  "manifest_version": 2,
  "name": "Extension",
  "description": "",
  "version": "1.9",
  "icons": {
    "16": "favicon.png",
    "128": "favicon.png"
  },
  "browser_action": {
    "default_popup": "index.html"
  },
  "permissions": [
    "tabs",
    "storage",
    "clipboardRead"
  ],
  "background": {
    "scripts": [
      "assets/background.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ba97c341-38bc-4883-a2b8-7ae513359b8c}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteActivity"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  }
}