Anti-tracking protection for Web Audio fingerprints

Stop audio fingerprinting
from following you online.

VPNs hide your network address and private browsing limits local traces, but your browser can still expose a repeatable Web Audio fingerprint. SoundPrint Guard isolates that signal for every site while music, calls, and video keep working normally.

Install free See how it works

Closes the fingerprint gap Zero browsing telemetry Audio stays clear

SoundPrint Guard Protection active

Protection HealthHEALTHY (7/7 Vectors)

checkout.example.com

AF-82C9-71E2 (Gen 1)

Balanced Mode · Stable within this site

Vectors7 Audited

ConfidenceHeuristic

Telemetry0% Upload

Cross-site correlationReduced by design

One private identity for this site (AF-82C9-71E2). A completely different one everywhere else.

Built for the browsers you already use

Chrome

Edge

Firefox

Safari

Brave

Arc

What this protects

Audio fingerprinting can recognize your browser even without cookies.

Websites can ask the Web Audio API to process a silent signal. Small differences in your hardware, operating system, browser, and audio stack produce a repeatable result that can become part of a browser fingerprint.

When the same result appears on unrelated websites, tracking systems can use it to help correlate activity across the web. Clearing cookies alone does not necessarily change that underlying signal.

A VPN changes the network route a website sees. A private or incognito window starts a cleaner session and limits saved history. The same browser and device can still expose the same audio characteristics because that signal comes from a different privacy layer.

Read the complete threat model

The tracking signal

A site reads a repeatable audio fingerprint.

Fingerprinting scripts measure subtle Web Audio output differences that may remain stable after cookies are cleared.

The privacy risk

Unrelated sites can compare the same identifier.

A reusable result gives trackers another signal for linking visits, devices, and browsing activity across domains.

The protection

Every domain sees a different, stable identity.

SoundPrint Guard isolates the observable result per site, breaking cross-site matching without randomizing every request or degrading playback.

Three privacy layers

A VPN changes the route. Private mode changes the session. We protect the signal.

These tools solve different parts of the privacy problem and work best together. SoundPrint Guard fills the browser-fingerprint gap without pretending to replace network or session privacy.

VPN

Changes your network route.

Hides your public IP from websites and encrypts traffic between your device and the VPN provider.

What remains visibleYour browser can still expose a Web Audio fingerprint.

Private / Incognito

Changes your browsing session.

Limits saved history and separates temporary cookies from your regular browsing session.

What remains visibleYour browser and device characteristics do not become new.

SoundPrint Guard

Changes the exposed audio signal.

Gives each website a separate, stable Web Audio identity so unrelated sites cannot simply match the same result.

Clear boundaryIt does not hide your IP address or replace a VPN.

Layer them: use a VPN for network privacy, private browsing for a clean session, and SoundPrint Guard for Web Audio fingerprint isolation.

Anti-tracking through separation

The site you are using gets a consistent signal. The tracker following you does not.

Privacy without the friction

Protection that behaves like part of the browser.

Random noise creates broken audio and suspicious behavior. SoundPrint Guard is engineered for consistent privacy across real browsing sessions.

Per-Site Separation

Every domain gets its own stable soundprint.

A private key stored in your browser creates a separate identity for every site. Reloads stay consistent on that site while unrelated websites cannot simply reuse the same value.

Installed-Hook Health Audit

7-vector protection check.

The built-in audit exercises the installed hooks for OfflineAudioContext, getChannelData, copyFromChannel, frequency and time-domain data, oscillators, and compressor graphs.

Activity Detection

Weighted Heuristic Classifier.

Onboard multi-node graph analysis classifies Web Audio activity as Normal, Suspicious, or a High-Confidence fingerprint probe while minimizing false alerts on legitimate media.

Granular Modes

4 Compatibility Modes.

Choose between Balanced (default), Maximum (Pro aggressive scrambling), Compatibility (minimal intervention for DAWs/WebRTC), and Disabled with 1-click fallback.

Automated Rotation

Schedule Identity Resets.

Rotate domain soundprints manually with 1 click or automate background resets every 7 days, 30 days, or on browser restart without mid-session disruption.

How it works

Three steps between a tracker and your hardware.

Protection starts before page scripts run and stays coherent across every supported Web Audio readback surface.

Intercept early

Web Audio prototypes are protected at document start, before fingerprinting libraries can read unmodified values.

Derive locally

The domain and your device-only master seed produce a unique, repeatable site identity.

Return coherent data

Bounded perturbations remain stable across reloads and consistent between related browser APIs.

Live diagnostic

See the signal a tracker can read.

This local test renders a standard Web Audio graph in your browser and summarizes the observable result. Nothing is uploaded.

Audio fingerprint inspector

OfflineAudioContext · local execution only

Calculated audio hash

Ready to inspect

Compressor float sum

Not measured

Audio configuration

Not measured

Exposure status

Unchecked

A stable measurement can become one input in a larger browser fingerprint. SoundPrint Guard isolates this signal per site to reduce cross-domain reuse.

A better privacy tradeoff

Stable where it matters. Different where it counts.

SoundPrint Guard avoids the two failure modes of audio fingerprinting defenses: no protection, or noisy and detectable protection.

Capability	Standard browser	Random-noise tools	SoundPrint Guard
Cross-site correlation	Exposed	Reduced inconsistently	Isolated per domain
Reload stability	Stable	Unstable	Deterministic
Verification compatibility	Native	May trigger loops	Native-like consistency
Audio quality	Unchanged	May add artifacts	Inaudible bounds
Data processing	Browser only	Varies	Local only
Identity controls	None	Limited	Rotate, reset, exclude

Who it is for

Browser privacy for everyday life and sensitive work.

SoundPrint Guard is for people who already take privacy seriously and teams whose work benefits from reducing unnecessary correlation between browsing contexts.

Privacy-conscious browser users

People already using privacy-focused browsers, VPNs, private windows, and advanced blockers who want to close the Web Audio fingerprinting gap those tools can leave.

Layered privacy · everyday browsing

Agencies, commerce, and QA teams

Teams already separating authorized client, seller, support, or test environments into distinct browser profiles and seeking stronger privacy boundaries between work contexts.

Policy-compliant profile separation

Security, legal, and research professionals

Analysts, journalists, legal teams, and researchers visiting unfamiliar sites who want to reduce reuse of a browser-level signal across unrelated domains.

Sensitive research · unfamiliar sites

Install in minutes

Choose your browser. Keep your habits.

Download the package for your browser, then follow the short installation guide. The free plan is active immediately.

Chromium browsers

Manifest V3 package for Chrome, Brave, Arc, and other Chromium browsers.

Download ZIP

Microsoft Edge

Dedicated Manifest V3 build for current Edge releases on Windows and macOS.

Download ZIP

Mozilla Firefox

Developer test package for Firefox Desktop. The signed AMO release will be offered after Mozilla approval.

Download test ZIP

Apple Safari

Conversion input for macOS development and review. Public availability follows Apple signing and approval.

Download test ZIP

Stop one audio fingerprint from following you everywhere.

Start with free protection or unlock deterministic per-site isolation with monthly, annual, or lifetime Pro.

Install free View pricing