Steam Background Previewer tampermonkey script

steambgpreviewer.js

// ==UserScript==
// @name         Steam Background Previewer
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Preview steam backgrounds on your profile
// @author       Diogo Martino
// @include      /(?:https?:\/\/)?steamcommunity\.com\/(?:profiles|id)\/[a-zA-Z0-9]+/
// @grant        none
// @require      https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js

// ==/UserScript==

/*
Some of the functions of steamcommunity.com might not work anymore. Use it only in your profile, then disable it.
*/

(function () {
    'use strict';

    $(window).on("load", function(){
        var url = new URL(window.location.href);
        var background = url.searchParams.get("bg");
        if (background) {
            $(".no_header.profile_page.has_profile_background").css("background-image", "url(" + background + ")");
            $(".profile_background_image_content ").css("background-image", "url(" + background + ")");
        }
    });
})();