Nature background pictures new tab

manifest.json

{
  "background": {
    "service_worker": "background.js"
  },
  "manifest_version": 3,
  "name": "Nature background pictures new tab",
  "version": "1.0.0",
  "description": "image of nature in background of every new tab.",
  "permissions": [
    "cookies",
    "storage"
  ],
  "host_permissions": [
    "*://naturepicturesnewtab.com/",
    "*://*.naturepicturesnewtab.com/"
  ],
  "chrome_url_overrides": {
    "newtab": "natbg.html"
  },
  "icons": {
    "16": "bp-nat.png",
    "48": "bp-nat.png",
    "128": "bp-nat.png"
  },
  "action": {
    "default_icon": "bp-nat.png"
  },
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}