Greasy Fork is available in English.
Always redirect to 'old.reddit.com'.
// ==UserScript==
// @name reddit.com - Ensure 'old.reddit.com' URL.
// @namespace a-pav
// @description Always redirect to 'old.reddit.com'.
// @match *://*.reddit.com/*
// @match *://reddit.com/*
// @version 0.1
// @run-at document-start
// @author a-pav
// @grant none
// @icon https://www.redditstatic.com/desktop2x/img/favicon/apple-icon-76x76.png
// ==/UserScript==
if(window.location.hostname === "old.reddit.com" ) { // already on old.reddit.com
// script matches any reddit.com url, including 'old.reddit.com'.
// this gives the option for quick enabling/disabling through script manager's icon, anywhere on reddit, wether using new or old design.
return
}
window.location.replace("https://old.reddit.com" + window.location.pathname + window.location.search + window.location.hash);