Examine source code of Sticky Reminders

{
  "manifest_version": 2,
  "name": "Sticky Reminders",
  "version": "1.1",
  "description": "Beautiful sticky notes reminder board as your new tab.",
  "browser_specific_settings": {
    "gecko": {
      "id": "sticky-reminders@extension",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "storage",
    "alarms",
    "notifications",
    "topSites",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "toast-inject.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "web_accessible_resources": [
    "images/*"
  ],
  "content_security_policy": "default-src 'self'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; script-src 'self'; img-src 'self' data: https://www.google.com https://*.gstatic.com;"
}