Online Privacy Checker: Test Your Tracker Protection
Find out whether your browser really blocks Google, Facebook and other trackers, see what every website can read about you without asking, and get a privacy grade with the fixes that help most.
- Real tests, not guesses
- 8 tracker networks checked
- No sign-up
Ready to test
Press Start test. It contacts 8 tracker addresses, without cookies, to see which ones your browser stops.
Tracker blocking
- Results appear after you press Start test.
Privacy protections
- Checking…
Fix first
What every website can read about you, without asking
Want to know how unique these details make you? Try the Browser Fingerprint Checker.
Tests run in your browser. The IP lookup is the only request to our server.
How this online privacy checker works
A real tracker test
Your browser tries to reach 8 widely used tracker addresses, from Google Analytics to the TikTok pixel. If a blocker, browser shield or privacy DNS stops the request, that tracker counts as blocked.
Settings read from your browser
Global Privacy Control, whether your graphics card and local network address are hidden, and whether an ad blocker removes hidden ad bait are all read directly, not guessed.
A score you can check
Every point in the grade comes from one of seven tests listed below. Nothing is deducted for things a website can't measure.
Check it yourself. Open your browser's developer tools (F12) and choose the Network tab before pressing Start test. You'll see one request per tracker, sent without cookies or the page address, plus one request to our site for your IP and provider. A red 404 or 405 line in the console is normal: it's the tracker's server answering our test request, which proves the request got through and wasn't blocked.
Privacy questions this checker answers
Find your question. Each answer points to the result that settles it.
| Your question | What the test shows | Action |
|---|---|---|
| I installed an ad blocker. Is it working? | The tracker list and ad blocker rows show exactly what it stops. Some blockers block ads but let analytics through. | |
| Why do I see ads for something I only searched once? | Trackers such as the Facebook pixel and Google tags follow you across sites. If they show as Not blocked, that's how. | |
| Which browser is most private? | Run the test in each browser you use. Brave, Firefox and Safari usually score higher than Chrome without any extensions. | |
| Does my VPN stop tracking? | A VPN changes your IP, shown under What every website can read, but trackers still load. For VPN leaks use the Firewall Test. | Check VPN leaks |
How the privacy grade is calculated
For the tracker test, your browser sends a small request to each tracker's real script address, without cookies or the page address. If the request is refused before it leaves your device, or your DNS won't resolve the address, the tracker counts as blocked. A control request to a neutral file host makes sure a slow connection isn't mistaken for blocking.
The other checks read browser settings directly. The third-party cookie row reflects your browser's default behaviour, because a website can't test cross-site cookies without a second domain.
Points add up to 100. Grades are A for 85 and above, B for 70 to 84, C for 55 to 69, D for 40 to 54, and F below 40.
Sources: Global Privacy Control, MDN: third-party cookies, MDN: WebGL renderer info.
What each test is worth
| Test | Points | Full points when |
|---|---|---|
| Trackers blocked | 40 | All 8 test trackers blocked |
| Third-party cookies blocked by default | 15 | Firefox, Safari or Brave, or blocked in Chrome settings |
| Ad blocker active | 10 | Hidden ad bait removed from the page |
| Global Privacy Control on | 10 | navigator.globalPrivacyControl is true |
| Graphics card hidden | 10 | GPU model not readable through WebGL |
| Local network address hidden | 10 | WebRTC shows a random .local name |
| Browser up to date | 5 | Within three versions of the current release |
Privacy myths that keep you tracked
Each of these feels private but leaves trackers running.
Incognito only forgets history on your device. Trackers and your internet provider still see what you do.
A VPN hides your IP, not your identity. Logged-in accounts, cookies and fingerprints still recognise you.
Websites ignore it. Global Privacy Control and a blocker actually change what happens.
Every extension can read your pages, and rare combinations make you easier to fingerprint. One good blocker is enough.
Habits that cut online tracking
Settings to change once
- Block third-party cookies in your browser's privacy settings.
- Install one reputable content blocker, such as uBlock Origin, or use Brave.
- Turn on Global Privacy Control where your browser offers it.
- On phones, turn off ad personalisation (Android) or Allow Apps to Request to Track (iPhone).
- Review which apps and sites can use your location.
Every day
- Reject non-essential cookies on consent banners.
- Use a separate browser or profile for social media.
- Sign out of Google or Facebook in browsers you use for sensitive searches.
- Use a disposable email for one-off sign-ups.
- Rerun this test after browser updates or new extensions.
Frequently asked questions
Short answers about the tests, browsers, GPC and VPNs.
Does the tracker test send my data to Google or Facebook?
It sends one small request to each tracker address, without cookies or the page address, to see whether your browser stops it. If a request gets through, that company sees your IP address, the same as when you visit any site that uses it. The test only runs when you press Start test.
Why does Chrome get a lower score than Firefox, Safari or Brave?
Chrome still allows third-party cookies by default and doesn't block trackers without an extension. Firefox, Safari and Brave block cross-site cookies and many trackers out of the box. Chrome users can close most of the gap with a content blocker.
How is this different from the Browser Fingerprint Checker?
This page tests whether your browser blocks tracking. The Browser Fingerprint Checker measures how unique your browser looks to sites that don't need cookies to recognise you. The two work well together.
What is Global Privacy Control?
GPC is a browser setting that tells every website you don't want your data sold or shared. Brave, DuckDuckGo and Firefox (in settings) support it, and some privacy laws require websites to honour it.
Is Do Not Track still worth turning on?
Not really. Almost no website ever honoured it and browsers are removing it. It isn't scored here; Global Privacy Control replaced it.
Will a VPN improve my score?
A VPN hides your IP address from websites, but trackers still follow you through cookies and fingerprinting. Tracker blocking and a privacy-focused browser make a bigger difference to this score.
Do you store my results?
No. All tests run in your browser. Only the connection lookup (your IP and provider) contacts our server, which keeps a scrambled copy of your IP for up to 12 hours to avoid repeat lookups.