Examine source code of QuickNotes New

{
  "manifest_version": 3,
  "name": "QuickNotes",
  "version": "0.0.2",
  "description": "Quick notes linked to the URL visited.",
  "permissions": [
    "tabs"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "options_page": "options.html",
  "icons": {
    "16": "128.png",
    "48": "128.png",
    "128": "128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "quicknote@vannai.re"
    }
  }
}