Examine source code of Notion Clipper

{
  "manifest_version": 3,
  "name": "Notion Clipper",
  "version": "1.4.0",
  "description": "Save the current page URL to Notion in a clean title + link + thumbnail format.",
  "browser_specific_settings": {
    "gecko": {
      "id": "notion-clipper@chromelabs",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity",
          "websiteContent"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "scripting",
    "contextMenus"
  ],
  "host_permissions": [
    "https://api.notion.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_title": "Clip to Notion",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "64": "icons/icon-64.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "commands": {
    "clip-page": {
      "suggested_key": {
        "default": "Alt+Shift+N"
      },
      "description": "Clip current page to Notion"
    }
  }
}