Privacy in your browser.
Zero data collected.
A privacy browser extension that shows you exactly who is tracking you online and gives you the power to stop them. 92,000+ tracker domains blocked. Fingerprint protection. Cookie consent automation. Chrome and Firefox.
Already using Shield? Get Premium, $4.99/mo →
What Shield Does
Real protection, not privacy theater.
Tracker Blocking
Powered by EasyList and EasyPrivacy filter lists. Blocks ads, trackers, and fingerprinting scripts before they load. See a real-time count of what was blocked on every page.
Privacy Scoring
Every site gets a privacy grade from S (perfect) to F. Instantly understand how a site treats your data based on trackers detected, cookie behavior, and third-party requests.
Cookie Auto-Reject
Automatically rejects non-essential cookies on 100+ consent platforms. No more clicking through confusing dialogs designed to trick you into accepting everything.
URL Cleaning
Strips 60+ tracking parameters from URLs as you browse. UTM tags, Facebook click IDs, Google click IDs, and dozens more are removed automatically so your links stay clean.
Fingerprint Protection
Browser fingerprinting identifies you without cookies. Sites probe your GPU, canvas rendering, audio processing, and installed fonts to create a unique ID that follows you across the web. Unlike cookies, you cannot clear a fingerprint. Shield detects and disrupts four fingerprinting techniques:
Canvas Noise
Adds imperceptible noise to canvas pixel data before sites can read it. Your canvas fingerprint changes each session, breaking cross-site tracking.
WebGL Spoofing
Returns generic GPU vendor and renderer strings instead of your real hardware info. Sites see the same GPU as millions of other users.
Audio Disruption
Adds micro-noise to AudioContext output used for audio fingerprinting. The hash changes each session without affecting audio playback.
Font Enumeration Blocking
Detects rapid font probing and returns randomized width measurements, preventing sites from building a reliable list of your installed fonts.
The Mirror
Shield's live counter-surveillance feed, and it is free. It shows you, in the moment, who is trying to profile you and what Shield did about it.
Session-replay detection
Some sites record every keystroke, mouse move, and scroll, then stream it to a replay vendor for playback. Shield recognizes 16 of them (FullStory, Hotjar, Microsoft Clarity, LogRocket, and more), names the one recording you, and can block the upload so the page still works but your session never leaves your browser.
Fake-reject alerts
When you reject a cookie banner, some trackers fire anyway. Shield rejects consent for you, then catches the trackers that ignore your choice and names them.
Simple Pricing
Full privacy protection is free. Premium unlocks advanced features.
Free
Core privacy protection, free forever.
- Tracker blocking (92,000+ known trackers)
- Privacy scoring (S through F grades)
- Tracker categorization (ads, analytics, social, fingerprinting)
- Cookie auto-reject (100+ consent platforms)
- Fingerprint protection (canvas, WebGL, audio, font)
- Leak detection and blocking: catches a page sending what you typed to another company before you press submit, and stops that recipient
- Names the script that read your field, which a blocker filtering by destination cannot see
- Data requests: generate an access or deletion request for any site, ready to send from your own mail client
- The Mirror: live session-replay detection and fake-reject alerts
- URL tracking parameter stripping (60+ params)
- Chrome + Firefox support
Premium
Protection is free and stays free. Premium is the record that accumulates: what happened to your data across every site, over months, and a dated export you can act on.
- Everything in Free
- Your exposure ledger: every company Shield watched receive something you typed, and every third-party script that read one of your fields, rolled up across every site
- A dated record you can export and attach to a data request, stating its own limits rather than overselling them
- Mirror history: a running record of who profiled you and what Shield did about it
- Fingerprint intelligence: which sites fingerprinted you and how (canvas, WebGL, audio, font)
- Privacy dashboard with trends
- Tracker network visualization
- Exportable privacy reports
- Also included
- Shadow Profile: import your Google or Meta data export and read the ad profile they admit to holding, in plain language
- Ad profile reset: a guided walkthrough of the interest and advertiser lists the platforms hold on you, with a reminder when the platforms have rebuilt it
Payment is handled by Stripe, who collect your name, email, and billing address to process payment and meet tax law. Symvek never sees your card number, and our own systems store only an opaque billing ID and your license, never your browsing.
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Under the Hood
Built with WXT
Modern browser extension framework with hot module reload, cross-browser support, and TypeScript by default. The same codebase targets both Chrome and Firefox.
Zero Data Collection
Shield collects no browsing data, ever. No analytics, no telemetry, no usage tracking. Your history, scores, and the trackers you encounter stay on your device. Premium validation sends only a one-way hash of your license key, never your browsing.
Runs in Your Browser
Shield runs entirely in your browser. Filter lists are fetched and cached locally; no browsing data is sent. The free tier makes no network calls at all. Premium adds a license check that sends only a hash of your key and device. No account needed for the free tier.
Common questions
Is Symvek Shield a tracker blocker?
Yes. Shield blocks over 92,000 known tracker domains the moment you install it, and shows you a live count of what it stopped on every page.
Does Shield block browser fingerprinting?
Yes. Shield detects fingerprinting attempts (canvas, WebGL, audio, and font probes) and disrupts them, so sites cannot build a hidden identifier from your browser.
Is Symvek Shield free?
Yes, and the protection is the free part. Privacy grades, tracker blocking, automatic cookie-banner rejection, fingerprint protection, leak detection and blocking, and the data-request generator are all free, with no account required. Premium is the record that builds up over time: every company Shield watched receive something you typed, every script that read one of your fields, across every site and month, plus a dated export you can attach to a data request.
Does Shield collect my data?
No. Shield collects nothing. Your browsing never leaves your device. You can confirm it yourself by opening your browser network tab and watching for outbound requests, of which there are none.
Does Shield work in Chrome and Firefox?
Yes, both. Shield ships as a Manifest V3 extension on the Chrome Web Store and a Manifest V2 extension on Firefox Add-ons. Same scoring engine, same blocklists, same zero collection.
Browse without being watched
Shield runs on Chrome and Firefox. Free, no account, and your browsing never leaves your device.