Examine source code of Markdown New Tab

{
  "name": "Markdown New Tab",
  "short_name": "Markdown New Tab",
  "version": "19.7.24",
  "description": "Take down notes 🗒️, save reminders ⏰, paste links 🔗, create checklists ☑️ all using markdown... directly in your New Tab!",
  "manifest_version": 2,
  "permissions": [
    "storage"
  ],
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "author": "Mihir Chaturvedi (plibither8)",
  "icons": {
    "16": "static/icon/icon16.png",
    "48": "static/icon/icon48.png",
    "128": "static/icon/icon128.png"
  },
  "applications": {
    "gecko": {
      "id": "markdownnewtab@mihir.ch"
    }
  }
}