Userscript to return Twitter "orig" URL

// ==UserScript==
// @name         View Full Twitter Image
// @version      2.0.1
// @description  Returns the full-size Twitter "orig" URL.
// @match        https://pbs.twimg.com/media/*
// ==/UserScript==

"use strict";

function urlConvert(url) {
  const input = url.href;
  const regex = /media\/(.*)(?:\?|\.).*(jpg|png)/m;
  const match = input.match(regex);
  if(match === null) return;
  location.assign(`https://pbs.twimg.com/media/${match[1]}?format=${match[2]}&name=orig`);
}

const url = new URL(location);
if(url.searchParams.get("format") && url.searchParams.get("name") === "orig") return;

urlConvert(url);