Accelerate JavaScript timers with safety checks. Edit @match entries for your required websites. Else, the script runs globally.
// ==UserScript==
// @name Timer Accelerator1000X
// @namespace http://tampermonkey.net/
// @version 1.1.3
// @license GNU AGPLv3
// @description Accelerate JavaScript timers with safety checks. Edit @match entries for your required websites. Else, the script runs globally.
// @author Ex_Dr.Perimentz
// @icon https://greasyfork.s3.us-east-2.amazonaws.com/n2gw8pb22uojb56dqox9ja5gg90f
// @match *://online-stopwatch.com/*
// @match *://downloadsite.com/*
// @match *://otherdownloadsite.com/files/*
// @match *://keedabankingnews.com/*
// @match *://healthvainsure.site/*
// @grant none
// @run-at document-start
// @compatible chrome
// @compatible firefox
// @compatible opera
// @compatible edge
// @compatible brave
// Copyright (C) 2025 Ex_Dr.Perimentz
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
// ==/UserScript==
(function() {
'use strict';
// Define the acceleration factor (e.g., 1000x speedup means 1000ms becomes 1ms)
const accelerationFactor = 1000;
// Define a minimum delay to avoid extremely short intervals that may be clamped by the browser
const minimumDelay = 4; // milliseconds
// Store original timer functions to call later
const originalSetTimeout = window.setTimeout;
const originalSetInterval = window.setInterval;
// Override the global setTimeout function
window.setTimeout = function(callback, delay, ...args) {
// Ensure the delay is a number. If not, default to 0.
delay = Number(delay) || 0;
// If the delay is positive, accelerate it by dividing by the acceleration factor,
// while ensuring it doesn't drop below the minimumDelay.
if (delay > 0) {
delay = Math.max(minimumDelay, delay / accelerationFactor);
}
// Call the original setTimeout with the modified delay
return originalSetTimeout(callback, delay, ...args);
};
// Override the global setInterval function similarly
window.setInterval = function(callback, delay, ...args) {
// Coerce delay to a number, defaulting to 0 if necessary.
delay = Number(delay) || 0;
// Accelerate the delay if it's a positive number, while ensuring a minimum delay
if (delay > 0) {
delay = Math.max(minimumDelay, delay / accelerationFactor);
}
// Call the original setInterval with the modified delay
return originalSetInterval(callback, delay, ...args);
};
// Log a message in the console to indicate that the timers have been accelerated
console.log(`Timers accelerated by ${accelerationFactor}x.`);
})();