Examine source code of Open with anything

{
  "name": "Open with ...",
  "version": "1.20",
  "manifest_version": 2,
  "description": "Open with ... offers versatile and nifty integration with native programs. Open pages in other browsers, video's in seperate players, or integrate wget.",
  "developer": {
    "name": "Janghou"
  },
  "icons": {
    "64": "icon.svg"
  },
  "background": {
    "scripts": [
      "background.js",
      "install.js"
    ]
  },
  "permissions": [
    "nativeMessaging",
    "contextMenus"
  ],
  "applications": {
    "gecko": {
      "id": "open_with@webonomic.nl",
      "strict_min_version": "56.0"
    }
  }
}