Canvas Blocker - Fingerprint Protect

Prevent HTML canvas element from generating a unique identification key to protect user's privacy

Canvas Blocker - Fingerprint Protect Chrome Extension

"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.

Extension 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:
Manifest version: 3
Permissions:
  • notifications
  • storage
  • contextMenus
  • scripting
Host permissions:
  • *://*/*
Size: 61.19K

Other platforms

Call Blocker - Outgoing & Inco (v1.2.2)
3.57 (561) 87,050+
Canvas Blocker - Fingerprint Protect (v0.1.5)
3.64 (14) 276
Canvas Blocker - Fingerprint Protect (v0.2.0)
5.00 (5) 5,923+
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Extension 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

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
  • Changes the signature on every page reload
  • Generates a new signature at every detection
  • It can work effectively in some cases
  • Users appreciate the functionality and effectiveness of the extension
  • Good for preventing tracking through canvas fingerprinting
Cons
  • Does not consistently prevent unique fingerprints across all websites
  • The 'Fixed Fingerprint' option does not randomize fingerprints in multi profiles
  • Does not pass certain fingerprint spoofing tests consistently
  • Users experience notifications that cannot be disabled
  • Many users report that it does not work against some fingerprinting techniques
Most mentioned
  • Doesn't work against canvas fingerprinting on some sites
  • Fixed Fingerprint feature doesn't work properly across multi profiles
  • Users question the effectiveness when needing proof that it works
  • Some users report conflicting experiences when testing the extension
  • Appreciation for the tool but requests for improvements
User reviews
отлично работает,оно меняет сигнатуру canvas fingreprint'а при каждой перезагрузке страницы,а если отключить то у тебя на всех сайтах одна и та же сигнатура, можно отследить ну вы поняли.

by MisterZaza, 2024-11-04

只有 GitHub 仓库的版本有效,这个不起作用
by 疯狂宇宙, 2024-11-01
View all user reviews

Extension safety

Risk impact

Canvas Blocker - Fingerprint Protect requires a few sensitive permissions. Exercise caution before installing.

Risk likelihood

Canvas Blocker - Fingerprint Protect has earned a good reputation and can be trusted.

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Promo images

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