Examine source code of Recipp – Recipe Viewer

{
  "name": "Recipp – Recipe Viewer",
  "version": "1.1.0",
  "description": "Detects recipes on web pages and imports them into the Recipp app.",
  "manifest_version": 3,
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Recipp"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "./contentScript.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "./serviceWorker.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{82b64292-5973-4ec9-8646-b9bd5735e1fb}"
    }
  }
}