Canvas Blocker - Fingerprint Protect

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?
"Canvas Blocker - Fingerprint Protect" is a Chrome extension designed to protect user privacy against malicious scripts that use the HTML canvas element for fingerprinting. It disrupts the creation of a unique identification key by introducing slight variations in the data produced by the canvas element. It operates in three modes; random noise, random noise per page, and fixed noise, while providing a range of features including blocking or disabling fingerprinting on specific hostnames, and alerts for detected canvas fingerprinting.
Stats
Users: 30,000+
Version: 0.2.0 (Last updated: 2023-11-02)
Creation date: 2020-05-26
Risk impact: Moderate risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 3
Permissions:
  • notifications
  • storage
  • contextMenus
  • scripting
Host permissions:
  • *://*/*
Size: 61.19K
URLs: Website
Stats date:

Other platforms

Not available on Firefox
Canvas Blocker - Fingerprint Protect
Canvas Blocker - Fingerprint Protect (v0.2.0)
5.00 (5) 5,313+
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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:

  1. Random noise
  2. Random noise (per page) to maintain a consistent identity within the current page session
  3. Fixed noise to sustain a constant yet unique identity continuously

Key Features:

  1. Minimal footprint fingerprint defender
  2. Ability to block or disable fingerprinting on specific hostnames
  3. Notification when canvas fingerprinting is detected
  4. Option to disable notification for select or all hostnames
  5. 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.

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User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
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
Fixed Fingerprint - This option isn't useful at all. You do NOT get randomnized Fixed Fingerprint by enabling this option. Your Fingerprint is same for ALL chrome based browser run within the same computer. You can test it using Comodo Dragon (chrome based) or portable version of Chrome.
by Tom Landi Tom Landi, 2022-09-06

Doesn't work. Still have a unique fingerprint.
by Crunch Berry Crunch Berry, 2022-06-22

я не могу понят разницы между двумя первыми режимами - по логике - первый должен всегда при запросе отпечатка выдавать разные при каждом запросе, второй должен сделать новый при входе на сайт и все время его выдавать при запросах, третий режим выдает оригинальный отпечаток. Так вот второй режим у меня всегда дает рандомные отпечатки, а почему? либо я не понимаю, что такое "per session"
View all user 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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Screenshots
Promo images
Canvas Blocker - Fingerprint Protect small promo image
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