Examine source code of Goto foo

{
  "manifest_version": 3,
  "name": "Goto foo",
  "version": "1.11",
  "description": "Adds \"Goto <selected text as url>\" to the right-click menu.",
  "homepage_url": "https://github.com/pmarks-net/gotofoo",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a12a18be-af05-41d1-9c8b-7636a0b7978a}"
    }
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png"
  },
  "permissions": [
    "contextMenus"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ]
}