Examine source code of Save to Notion

{
  "manifest_version": 2,
  "name": "Save to Notion",
  "version": "0.0.5",
  "description": "Save semantic web page data to notion.so.",
  "icons": {
    "48": "icons/ico-48.png",
    "96": "icons/ico-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "index.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "*://api.notion.com/*",
    "storage"
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5f284c22-5863-4fb6-b523-9fb4ce1061dc}",
      "strict_min_version": "65.0"
    }
  }
}