Spoofs browser fingerprint data: canvas, WebGL, audio, language, timezone, userAgent, screen size, memory, and more. Session-persistent with one-time domain values per session only. Runs in top frame only for stealth and realism.
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// ==UserScript==
// @name Anti-Fingerprinting Shield Plus
// @namespace https://365devnet.eu/userscripts
// @version 4.3
// @description Spoofs browser fingerprint data: canvas, WebGL, audio, language, timezone, userAgent, screen size, memory, and more. Session-persistent with one-time domain values per session only. Runs in top frame only for stealth and realism.
// @author Richard B
// @match *://*/*
// @run-at document-start
// @grant none
// @license MIT
// ==/UserScript==
(function () {
'use strict';
// ===== Skip if inside iframe =====
if (window.top !== window.self) return;
const DEBUG_MODE = true;
const sessionId = getOrCreateSessionId();
if (DEBUG_MODE) console.log(`[AFS+] Anti-Fingerprinting Shield v4.3 started. Session: ${sessionId}`);
// ===== Randomization Pools =====
const platforms = ['Win32', 'Linux x86_64', 'MacIntel', 'FreeBSD'];
const languages = ['en-US', 'nl-NL', 'fr-FR', 'de-DE', 'sv-SE'];
const timezones = ['UTC', 'Europe/Amsterdam', 'America/New_York', 'Asia/Tokyo'];
const userAgents = [
'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36',
'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0 Safari/605.1.15',
'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36'
];
const cores = [2, 4, 6, 8];
const memorySizes = [2, 4, 8];
const screenWidths = [1920, 1680, 1366];
const screenHeights = [1080, 1050, 768];
// ===== Get Spoofed Values (sessionStorage-backed) =====
const spoofed = {
platform: getOrSet('platform', platforms),
language: getOrSet('language', languages),
languages: () => [spoofed.language, 'en'],
timezone: getOrSet('timezone', timezones),
userAgent: getOrSet('userAgent', userAgents),
cores: parseInt(getOrSet('cores', cores)),
memory: parseInt(getOrSet('memory', memorySizes)),
screenWidth: parseInt(getOrSet('screenWidth', screenWidths)),
screenHeight: parseInt(getOrSet('screenHeight', screenHeights))
};
function getOrSet(key, pool) {
const storageKey = '__afs_' + key;
let value = sessionStorage.getItem(storageKey);
if (!value) {
value = pool[Math.floor(Math.random() * pool.length)];
sessionStorage.setItem(storageKey, value);
}
return value;
}
function getOrCreateSessionId() {
const key = '__afs_session_id';
let id = sessionStorage.getItem(key);
if (!id) {
id = Math.random().toString(36).substring(2, 10);
sessionStorage.setItem(key, id);
}
return id;
}
function spoof(obj, prop, valueFn) {
try {
Object.defineProperty(obj, prop, {
get: valueFn,
configurable: true
});
} catch (e) {}
}
// ===== Spoofing APIs =====
spoof(navigator, 'language', () => spoofed.language);
spoof(navigator, 'languages', () => spoofed.languages());
spoof(navigator, 'platform', () => spoofed.platform);
spoof(navigator, 'userAgent', () => spoofed.userAgent);
spoof(navigator, 'hardwareConcurrency', () => spoofed.cores);
spoof(navigator, 'deviceMemory', () => spoofed.memory);
spoof(navigator, 'maxTouchPoints', () => 1);
spoof(navigator, 'plugins', () => []);
spoof(navigator, 'mimeTypes', () => ({ length: 0 }));
spoof(navigator, 'mediaDevices', () => ({
enumerateDevices: () => Promise.resolve([])
}));
spoof(navigator, 'webdriver', () => false);
spoof(navigator, 'connection', () => ({
downlink: 10,
effectiveType: '4g',
rtt: 50,
saveData: false
}));
if (navigator.permissions && navigator.permissions.query) {
const originalQuery = navigator.permissions.query;
navigator.permissions.query = function (params) {
if (params.name === 'notifications') {
return Promise.resolve({ state: 'denied' });
}
return originalQuery.call(this, params);
};
}
spoof(window.screen, 'width', () => spoofed.screenWidth);
spoof(window.screen, 'height', () => spoofed.screenHeight);
spoof(window, 'innerWidth', () => spoofed.screenWidth);
spoof(window, 'innerHeight', () => spoofed.screenHeight - 40);
try {
const original = Intl.DateTimeFormat.prototype.resolvedOptions;
Intl.DateTimeFormat.prototype.resolvedOptions = function () {
const options = original.call(this);
options.timeZone = spoofed.timezone;
return options;
};
} catch (e) {}
const AudioContext = window.AudioContext || window.webkitAudioContext;
if (AudioContext && AnalyserNode.prototype.getFloatFrequencyData) {
const original = AnalyserNode.prototype.getFloatFrequencyData;
AnalyserNode.prototype.getFloatFrequencyData = function (arr) {
original.call(this, arr);
for (let i = 0; i < arr.length; i++) {
arr[i] += Math.random() * 0.1;
}
};
}
const originalGetImageData = CanvasRenderingContext2D.prototype.getImageData;
CanvasRenderingContext2D.prototype.getImageData = function (x, y, w, h) {
const data = originalGetImageData.call(this, x, y, w, h);
for (let i = 0; i < data.data.length; i += 4) {
data.data[i] += Math.floor(Math.random() * 3);
data.data[i + 1] += Math.floor(Math.random() * 3);
data.data[i + 2] += Math.floor(Math.random() * 3);
}
return data;
};
const originalGL = WebGLRenderingContext.prototype.getParameter;
WebGLRenderingContext.prototype.getParameter = function (param) {
const spoofMap = {
37445: 'FakeVendor Inc.',
37446: 'Virtual GPU Renderer',
3379: 4096,
35661: 8
};
return spoofMap[param] || originalGL.call(this, param);
};
window.DeviceMotionEvent = undefined;
window.DeviceOrientationEvent = undefined;
delete navigator.getBattery;
window.addEventListener('beforeunload', e => {
e.stopImmediatePropagation();
e.preventDefault();
return undefined;
}, true);
// ===== Debug Log =====
if (DEBUG_MODE) {
console.group(`[AFS+] Spoofed Fingerprint for Session: ${sessionId}`);
console.log('User Agent :', spoofed.userAgent);
console.log('Platform :', spoofed.platform);
console.log('Language :', spoofed.language);
console.log('Languages :', spoofed.languages().join(', '));
console.log('Timezone :', spoofed.timezone);
console.log('CPU Cores :', spoofed.cores);
console.log('Device Memory :', spoofed.memory);
console.log('Screen Width :', spoofed.screenWidth);
console.log('Screen Height :', spoofed.screenHeight);
console.groupEnd();
}
})();