Examine source code of NockNotes

{
  "manifest_version": 3,
  "name": "NockNotes",
  "version": "1.0.4",
  "description": "Notes in every new tab. Capture instantly, sync across devices, and send to Pipedrive & other CRMs in one click.",
  "author": "Daten-Unger GmbH",
  "homepage_url": "https://nocknotes.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "nocknotes@nocknotes.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "action": {
    "default_title": "NockNotes",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    }
  },
  "sidebar_action": {
    "default_title": "NockNotes",
    "default_panel": "newtab.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    },
    "open_at_install": false
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}