Browser Fingerprint Checker: See What Makes You Unique
Websites can recognise your browser without cookies by combining details like your graphics card, fonts and screen. See your own fingerprint, which protections your browser uses, and how to become harder to track.
- Computed on your device
- No fingerprinting library
- No sign-up
Reading…
A hash of the signals below. Compare it in a private window or another browser.
Checking…
Protections found
- Checking…
Network details (not part of the ID)
- IP address
- Checking…
Your signals
| Signal | Your value | Identifying |
|---|---|---|
| Reading your browser… | ||
How to test it
- Note the first four characters of your Fingerprint ID.
- Open this page in a private or incognito window. If the ID is the same, private mode doesn't hide you from fingerprinting.
- Turn on your VPN and reload. The IP changes, but the ID usually doesn't.
- Try another browser, such as Brave or Firefox. A different ID, or one that changes every visit, means it resists fingerprinting.
Everything is computed in your browser. Only the IP lookup contacts our server.
How this browser fingerprint checker works
The same tricks trackers use
The page draws a hidden image, plays a silent tone, measures fonts and reads your graphics card, exactly like real fingerprinting scripts do. Nothing needs your permission.
Hashed on your device
All signals are combined into one SHA-256 hash in your browser. No fingerprinting library is loaded, and the fingerprint is never sent to us or anyone else.
Protections, detected
We check for canvas noise, hidden graphics details, limited fonts and anti-fingerprinting modes, so you can see whether your browser is quietly defending you.
Check it yourself. Open your browser's developer tools (F12) and choose the Network tab, then press Check again. The only request goes to our site for your IP address; the fingerprint itself never leaves your device.
Questions this checker answers
Find your question. Each answer points to the result that settles it.
| Your question | What the checker shows | Action |
|---|---|---|
| Sites recognise me even after I clear cookies | Your Fingerprint ID stays the same without cookies. The signals marked High are the main reasons. | |
| Does Incognito hide me? | Compare the ID in a normal and a private window, using the How to test it steps. | |
| Does my VPN change my fingerprint? | A VPN changes the Network details, not the ID. Fingerprinting doesn't rely on your IP. | |
| Which browser resists fingerprinting best? | Check Protections found in each browser. Brave and Tor Browser usually show the most. |
What goes into your fingerprint
Each signal on its own is shared by many people. Combined, they often narrow you down to a handful of browsers, which is why fingerprinting works without cookies and survives private windows.
The rating counts how many high-identifying signals your browser exposes and which protections it uses. Easy to identify means none are protected. Partly protected means one or two are. Well protected means your browser hides or randomises the strongest signals.
This page doesn't compare you with other visitors, because that would mean storing fingerprints. For a population-based uniqueness score, EFF's Cover Your Tracks keeps a research database.
Sources: EFF Cover Your Tracks, W3C: Mitigating browser fingerprinting, Mozilla: fingerprinting protection.
The signals, and how identifying each one is
| Signal | What is read | How identifying |
|---|---|---|
| Canvas drawing | Tiny rendering differences from your graphics card, drivers and fonts | High |
| Installed fonts | Which of about 50 common fonts are present, including Indian-language fonts | High |
| WebGL graphics card | The GPU model and driver, plus graphics limits | High |
| Audio processing | How your device processes a silent test tone | Medium |
| User agent | Browser, version and operating system | Medium |
| Screen | Resolution, colour depth and pixel ratio | Medium |
| Time zone and languages | Your clock's region and preferred languages | Medium |
| Hardware | CPU cores, memory and touch support | Low |
| Display and accessibility settings | Dark mode, reduced motion, colour range and contrast | Low |
| Privacy settings | Do Not Track, Global Privacy Control and cookie support | Low |
Fingerprinting myths
Common privacy habits that don't touch your fingerprint.
Your fingerprint doesn't live in cookies. It's rebuilt from your device on every visit.
A VPN only changes your IP. Your graphics card, fonts and screen stay the same.
A fake user agent that doesn't match the rest of your signals makes you stand out more.
Rare combinations are easier to spot. A mainstream browser with built-in protection blends in better.
Habits that reduce fingerprinting
Do
- Use a browser with built-in fingerprinting protection.
- In Firefox, choose Strict tracking protection.
- Keep your browser updated, so you share the most common version.
- Block third-party scripts with a content blocker, which stops many fingerprinting scripts loading at all.
- Use separate browsers or profiles for work, shopping and social media.
Avoid
- Installing many rare fonts or extensions.
- User-agent spoofing extensions.
- Assuming Incognito or a VPN alone makes you anonymous.
- Unusual window sizes on a desktop browser (Tor Browser handles this for you).
- Staying logged in to social media while browsing everything else.
Frequently asked questions
Short answers about the ID, private mode, VPNs and protection.
Is my fingerprint sent to your server?
No. Every signal is read and hashed in your browser, and no fingerprinting library or third-party script is loaded. The only request to our server looks up your IP address and internet provider, and it doesn't include your fingerprint.
What is the Fingerprint ID?
It's a SHA-256 hash of all the signals below, shortened for display. If you get the same ID in a private window or after clearing cookies, websites can recognise you the same way.
Can websites read all of this without asking?
Yes. None of these signals needs a permission prompt. Any script on any page can read them, which is why fingerprinting works even when cookies are blocked.
Does Incognito or private mode change my fingerprint?
Usually not. Private windows forget cookies and history, but your screen, fonts, graphics card and most other signals stay the same. Use the test steps on this page to check your own browser.
How reliable is the "easy to identify" rating?
It's based on which identifying signals your browser exposes and which protections it uses, not on a database of other visitors. To see how rare your exact combination is among many users, EFF's Cover Your Tracks keeps such a database.
How can I make my browser harder to fingerprint?
Use a browser with fingerprinting protection, such as Brave, Firefox with Strict protection or fingerprinting resistance, Safari, or Tor Browser for the strongest protection. Avoid installing many rare extensions and fonts, which make you stand out.
Is browser fingerprinting legal?
It depends on the purpose and the country. In the EU, reading device information for tracking generally needs consent, and India's Digital Personal Data Protection Act requires consent to process personal data. Fraud prevention and security are often treated differently.