Canvas Fingerprint
Check whether canvas output adds a distinctive browser fingerprint signal.
Run this tool
Input or start condition: Review the collection scope and press the start control. No active collection starts before that action.
Accepted input or signal: Current browser capability.
Possible output: A deterministic canvas rendering created only after you start the collector.; Whether repeated local renders are stable enough to contribute a high-entropy graphics signal.
Key limitation: Browser privacy defenses can block, randomize, or prompt for canvas access and should be reported as supported outcomes.
What this checks
- A deterministic canvas rendering created only after you start the collector.
- Whether repeated local renders are stable enough to contribute a high-entropy graphics signal.
How to interpret results
- A stable value can contribute to fingerprinting, but it does not identify a person or device on its own.
Common issues
- Browser privacy defenses can block, randomize, or prompt for canvas access and should be reported as supported outcomes.
Privacy note
Canvas drawing starts only after a click and the rendered value stays in this browser; it is excluded from analytics.