// ==UserScript==
// @name        Strip UTM Tracking
// @namespace   https://arantius.com/misc/greasemonkey/
// @description Remove "utm_" parameters from the query string, used by Google Analytics.
// @include     *?*utm*
// @version     1
// @grant       none
// @run-at      start
// ==/UserScript==
if (document.location.search) {
var s = document.location.search.replace(/utm_[a-z]+=(.*?)(&|$)/g, '');
if (s == '?') s = '';
if (s != document.location.search) {
var h = document.location.href.replace(/\?.*/, s);
history.replaceState({}, document.title, h);
}
}