fuck_fbclid.user.js

// ==UserScript==
// @name        Remove URL redirectors and tracking params
// @namespace   https://github.com/adrianiainlam
// @description Remove URL redirectors and tracking params
// @include     *
// @version     2.1
// @downloadURL
// @updateURL
// @grant       none
// ==/UserScript==

function isUrlWindowLocation(url) {
  let winLoc = new URL(window.location);
  return (url.origin == winLoc.origin &&
          url.pathname == winLoc.pathname);
}

function main() {
  for (let elem of document.querySelectorAll('a')) {
    sanitizeURL(elem);
    elem.addEventListener("click", sanitizeURLEventHandler);
    elem.addEventListener("auxclick", sanitizeURLEventHandler);
    elem.addEventListener("mouseover", sanitizeURLEventHandler);
  }
}

function sanitizeURLEventHandler(e) {
	sanitizeURL(e.currentTarget);
}

function sanitizeURL(elem) {
  try {
    let url = new URL(elem.href);

    if (elem.href[0] == '#')
      return;
    if (isUrlWindowLocation(url) && elem.indexOf("#") >= 0)
      return;
    if (elem.hasAttribute('data-lynx-mode'))
      elem.removeAttribute('data-lynx-mode');
    if (elem.hasAttribute('data-lynx-uri'))
      elem.removeAttribute('data-lynx-uri');

    if(elem.href.indexOf("https://l.facebook.com/l.php") == 0) {
      elem.href = decodeURIComponent(elem.href.split('l.php?u=')[1].split('&')[0]);
      url = new URL(elem.href);
    }

    //if (url.protocol == "javascript:")
    //  return;
    if (url.protocol != "http:" && url.protocol != "https:")
      return;

    let params = url.searchParams;

    if (params.has('fbclid'))
      params.delete('fbclid');

    if (params.has('gclid'))
      params.delete('gclid');

    if (params.has('utm_source'))
      params.delete('utm_source');
    if (params.has('utm_medium'))
      params.delete('utm_medium');
    if (params.has('utm_campaign'))
      params.delete('utm_campaign');
    if (params.has('utm_term'))
      params.delete('utm_term');
    if (params.has('utm_content'))
      params.delete('utm_content');


    let paramStr = params.toString();
    if (paramStr != "")
      paramStr = '?' + paramStr;

    elem.href = url.origin + url.pathname + paramStr + url.hash;
  }

  catch (err) {
    // most likely new URL() failed
    // do nothing
  }
}

var obs = new MutationObserver(main);
obs.observe(document.body, {
  "childList": true,
  "subtree": true
});

Script not recognized as compatible with Tampermonkey 4.18.1 (January 17, 2023). Mozilla Firefox 111.0b5 (64-bit).

@Korb Thanks for reporting the issue, I messed up the file extension. It is fixed now.

Sumptuously! This is the only such script that successfully removes trackers from the links of the Augmented Steam browser add-on. Thank you!