Can I change my canvas fingerprint?

Not easily without hardware changes. Firefox resistFingerprinting adds random noise.

Why is it so effective?

Rendering depends on GPU hardware, drivers, and OS anti-aliasing -- factors that differ across almost every device.

Does incognito change it?

No. Your rendering pipeline is identical in normal and incognito sessions.

How does Tor Browser handle this?

It prompts before canvas extraction and adds random noise to prevent consistent fingerprinting.

Canvas Fingerprint

Free online canvas fingerprint checker. See your canvas fingerprint and learn how websites use rendering differences to identify and track you across sites.

Free online canvas fingerprint checker. See your canvas fingerprint and learn how websites use rendering differences to identify and track you across sites. Open the tool -- your canvas fingerprint is generated automatically using WebGL-style rendering. Review the SHA-256 hash of your rendered canvas output. Check what the fingerprint reveals: GPU model, driver version, font rendering, and OS-specific anti-aliasing. Use the uniqueness estimate to understand how identifiable your rendering pipeline is. Draws text, emoji, and geometric shapes to a hidden canvas, extracts the rendered image data, and hashes it with SHA-256. Different GPUs, OSes, and browser engines produce slightly different pixel outputs -- making this a powerful tracking vector. 100% client-side.