Self-test · runs only in your browser
This is what we already know about you before you do anything.
Every website receives this information automatically when you open a page. You have not clicked or allowed anything.
Your IP address216.73.216.219 (IPv4)
Where you came fromdirect or hidden
Privacy signalsGPC off · Do Not Track off
This is only the beginning. With a few lines of JavaScript any website can read dozens of further attributes: your graphics card, installed fonts and software, battery level, screen layout, time zone, how you move your mouse and how you type. Together they form a fingerprint that recognises you even without cookies.
0
attributes found
0
bits of uniqueness (estimate)
…
people share your fingerprint (estimate)
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protection score out of 100
Live: your behaviour on this page
runningWebsites can record every movement. Advertising and fraud detection systems use this to tell humans from bots and to recognise people. Here it is only displayed, nothing is recorded.
Your exact location (only with your permission)
If a site asks for your location and you allow it, it receives coordinates accurate to a few metres. Many people click "allow" out of habit. Here the coordinates stay in your browser.
Consistency check: how fraud systems detect disguises
Banks, shops and ad networks compare attributes with each other. If something does not fit (time zone and language, claimed and real system), a VPN, a modified browser or a bot stands out.
How to protect yourself: your personal tips
The file is created directly in your browser. Discard reloads the page; then everything is gone.
All headers your browser just sent to us (4)
accept: */* accept-encoding: gzip, br, zstd, deflate host: llmstxt.info user-agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Important: this page shows what is technically possible. llmstxt.info does not use these techniques to track you. Uniqueness is a rough estimate based on published fingerprinting studies, not a measurement against a database. The page reads nothing before your click, stores nothing and sends nothing to third parties.