// ==UserScript==// @name        Amazon URL Cleaner// @description Show the shortest possible URL for Amazon items.// @namespace   https://arantius.com/misc/greasemonkey/// @match       https://www.amazon.com/dp/*// @match       https://www.amazon.com/*/dp/*// @match       https://www.amazon.com/gp/product/*// @match       https://www.amazon.com/*/ASIN/*// @run-at      document-start// @version     9// @grant       none// @icon        https://www.amazon.com/favicon.ico// ==/UserScript==function getProductId() {var m;m = document.location.href.match(/(?:.+\/)?dp\/([^/?]+)/);if (m) return m[1];m = document.location.href.match(/gp\/product\/([^/?]+)/);if (m) return m[1];m = document.location.href.match(/ASIN\/([^/?]+)/);if (m) return m[1];}var productId = getProductId();if (productId) {history.replaceState({}, document.title, 'https://www.amazon.com/dp/' + productId);}