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manifest.json

{
  "name": "iframe in new tab",
  "version": "0.0.0.2",
  "manifest_version": 3,
  "description": "Open an iframe in a new tab",
  "action": {
    "default_icon": "icon-128.png",
    "default_popup": "popup.html",
    "default_title": "iframe in new tab"
  },
  "icons": {
    "16": "icon-16.png",
    "48": "icon-128.png"
  },
  "background": {
    "service_worker": "background.js"
  },
  "permissions": [
    "tabs",
    "contextMenus"
  ],
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}