plex_redirect.user.js

// ==UserScript==
// @name         Plex Redirect Script
// @namespace    https://example.com/
// @version      1.0
// @description  Automatically redirects users from the Plex homepage (www.plex.tv) to the Plex web app (app.plex.tv).
// @author       Your Name
// @match        https://www.plex.tv/*
// @grant        none
// ==/UserScript==

/*
 * This script is designed to automatically redirect users from the Plex homepage
 * (https://www.plex.tv/) to the Plex web app (https://app.plex.tv/desktop/#!/).
 * It works with any userscript manager, such as Violentmonkey, Tampermonkey, or Greasemonkey.
 */

(function() {
    'use strict'; // Enforces strict mode for better error handling and cleaner code.

    /*
     * Define the target URL that you want users to be redirected to.
     * In this case, it's the Plex web app.
     */
    const targetURL = "https://app.plex.tv/desktop/#!/";

    /*
     * window.location.replace() is used to redirect the browser to a new URL.
     * This method ensures that the current page is replaced in the browser's history,
     * so users cannot hit "Back" to return to the original page.
     *
     * If you want users to retain their ability to go back, use window.location.href instead.
     */
    try {
        // Attempting the redirection
        console.log(`[INFO] Redirecting from ${window.location.href} to ${targetURL}`);
        window.location.replace(targetURL);
    } catch (error) {
        // Catch any errors that occur during redirection and log them for debugging purposes.
        console.error(`[ERROR] Failed to redirect: ${error.message}`);
    }

    /*
     * Additional Notes:
     * - The @match directive above ensures this script only runs on URLs matching https://www.plex.tv/*.
     *   If you want broader matching, you can use wildcards or regular expressions.
     * - The 'use strict' directive helps catch common coding errors and prevents unsafe actions.
     */
})();