Canvas Blocker - Fingerprint Protect
Prevent HTML canvas element from generating a unique identification key to protect user's privacy
What is Canvas Blocker - Fingerprint Protect?
Stats
Chrome-Stats Rank
Summary
This browser extension safeguards user privacy by preventing malicious scripts from using the HTML canvas element for user fingerprinting. It introduces slight changes to the data generated by the canvas element when specific methods are invoked, rendering it unusable for fingerprinting. In comparison to similar extensions, this one is lighter and employs a more efficient method to obstruct fingerprinting across all frame elements (top and subframes). The extension operates in three modes:
- Random noise
- Random noise (per page) to maintain a consistent identity within the current page session
- Fixed noise to sustain a constant yet unique identity continuously
Key Features:
- Minimal footprint fingerprint defender
- Ability to block or disable fingerprinting on specific hostnames
- Notification when canvas fingerprinting is detected
- Option to disable notification for select or all hostnames
- Compatibility with cross-origin (CORS) and sandboxed iframes (such as Disqus and Hangouts)
Notes: This extension doesn't entirely block the canvas element. Instead, it modifies two methods to prevent the JavaScript engine from creating a unique identification key from this element.
User reviews
User reviews summary
Pros
- Helpful in blocking fingerprints
- Has a whitelist
- Lightweight and fast
- Provides future updates
Cons
- Notifications are annoying and can't be turned off easily
- Fixed Fingerprint function doesn't work as expected
- Doesn't pass persistent noise spoof test
- Doesn't work on all websites
Most mentioned
- Notifications
- Fixed Fingerprint function
- Website compatibility
- Comparison with Firefox's CanvasBlocker
Recent reviews
Safety
Risk impact
Canvas Blocker - Fingerprint Protect may not be safe to use and it requires some risky permissions. Exercise caution when installing this extension. Review carefully before installing.
Risk likelihood
Canvas Blocker - Fingerprint Protect has earned a good reputation and can be trusted.
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