Examine source code of ListGrabber

{
  "name": "LGAutonext",
  "version": "1.3resigned1",
  "manifest_version": 2,
  "description": "LG addon for other browsers for Page actions.",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>",
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "/js/jquery-3.3.1.js",
        "/js/content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "/js/jquery-3.3.1.js",
      "/js/background.js"
    ]
  },
  "icons": {
    "96": "/img/egrabber_96x96.png"
  },
  "applications": {
    "gecko": {
      "id": "listgrabber@egrabber.com",
      "strict_min_version": "50.0"
    }
  },
  "permissions": [
    "cookies",
    "nativeMessaging",
    "notifications",
    "activeTab",
    "contextMenus",
    "tabs",
    "<all_urls>",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "browsingData",
    "webNavigation"
  ]
}