Examine source code of Bulk Tab URL Opener

{
  "manifest_version": 2,
  "name": "Bulk Tab URL Opener",
  "version": "1.1.0",
  "description": "Paste a list of URLs and open them all as tabs, N at a time. Close a loaded tab and the next one in the queue opens automatically.",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Bulk Tab URL Opener",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bulk-tab-url-opener@iqbal-extensions.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}