Device checks / Privacy
Browser Fingerprint Test: What Websites Can Read About Your Browser
See the signals a website can collect without permission, your user agent, languages, time zone, screen, graphics card, installed fonts, and a canvas drawing hash, combined into a fingerprint summary you can compare between visits to see whether your browser is easy to recognise.
Browser Fingerprint Test: What Websites Can Read About Your Browser: Each signal on its own is shared by many people, but together they can narrow you down. The page reads them with standard browser features, draws a hidden test image to see how your graphics stack renders it, checks which of 32 common fonts are installed, and hashes everything except the window size into an eight-character summary. Runs 100% locally in your browser with zero server file uploads.
- Category
- Everyday tools
- Runs
- In your browser
- Cost
- Free · no sign-up
- Availability
- Ready to use
Runs entirely in your browser
Websites can combine signals like these, which any page can read without asking, into an identifier that often stays the same even after you clear cookies. Everything here is read and shown in your browser only; nothing is sent anywhere, and the summary is kept in this browser just to compare with your next visit. Browsers with fingerprinting protection, such as Tor Browser, Brave, Safari, or Firefox with strict protection, make some of these values generic or randomise them.
What is not here
Real trackers also use audio processing quirks, battery and sensor data, and behaviour over time; this page shows the common signals without collecting any of it.
Your IP
To see the IP address websites receive, use what is my IP.
How to use it
- Open the page and let it read the signals.
- Look through the table of what your browser reveals.
- Come back later, or after changing settings, and compare the summary.
Privacy & limitations
Everything is read and shown in your browser; nothing is sent anywhere.
Related tools
Frequently asked questions
Does clearing cookies stop fingerprinting?
No: a fingerprint is worked out again from your device on each visit, so it survives cleared cookies and private windows.
How can I reduce my fingerprint?
Use a browser with fingerprinting protection, keep it up to date, and avoid unusual fonts and extensions; looking like many others is the aim.
Why does my summary change?
Browser updates, new fonts, a different screen or zoom, and protection that randomises values all change it.
Free tool · runs in your browser · no account required