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manifest.json
{
  "name": "NASA Astronomy Picture of the Day New Tab",
  "description": "NASA Astronomy Picture of the Day New Tab",
  "version": "2024.1.24.2015",
  "manifest_version": 3,
  "offline_enabled": true,
  "icons": {
    "128": "icons/icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "action": {
    "default_title": "New Tab"
  },
  "background": {
    "service_worker": "background.js"
  },
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}