Examine source code of Easy DNS lookup

{
  "options_ui": {
    "page": "options.html"
  },
  "manifest_version": 2,
  "description": "Utility to do DNS lookups and display the response, using HTTPS DNS servers.",
  "name": "Easy DNS lookup",
  "permissions": [
    "storage",
    "contextMenus",
    "https://dns.nextdns.io/"
  ],
  "background": {
    "scripts": [
      "contextMenu.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "dns@wesinator.github.io"
    }
  },
  "icons": {
    "16": "assets/network-workgroup_16x16.png",
    "32": "assets/network-workgroup_32.png",
    "48": "assets/network-workgroup_48.png",
    "96": "assets/network-workgroup_96.png"
  },
  "version": "0.8.2"
}