Remove tumblr outgoing URL tracking.

fixTumblr.user.js

// ==UserScript==
// @name        fixTumblr
// @namespace   https://gist.github.com/rEtSaMfF/874c6b64b0bfe6f3a4bf43be41279ddc
// @description Remove tumblr outgoing URL tracking.
// @include     /^https?://.*\.tumblr\.com/?.*$/
// @exclude     /^https?://(secure\.)?(assets)\.tumblr\.com/.*$/
// @version     2016-09-05
// @run-at      document-idle
// @grant       none
// ==/UserScript==


// do not run on iframes
if (window.location.href.includes("iframe"))
  return;

if (window.top != window.self) {
  console.log("iframe: " + window.location);
  //return;
} else {
  console.log("NOT iframe: " + window.location);
}


function fixTumblr() {
  var links = document.getElementsByTagName("a");
  var linksArray = Array.prototype.slice.call(links);
  linksArray.forEach(function(link) {
    var href = link.href;
    if (! href.includes("umblr.com/redirect?z="))
      return;
    var one = href.split("=")[1];
    var two = one.split("&");
    var decodedURL = decodeURIComponent(two[0]);
    //console.log(link.href);
    link.href = decodedURL;
    //console.log(link.href);
  });
}

fixTumblr();