Canvas Blocker - Fingerprint Protect

Name: Canvas Blocker - Fingerprint Protect
Rating: 3.6429 (14 reviews)
Author: Joue

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

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Canvas Blocker - Fingerprint Protect is a lightweight Chrome extension designed to enhance user privacy by preventing malicious fingerprinting via the HTML canvas element. It safeguards your browser by adding slight noise to canvas data, blocking websites from uniquely identifying your device.

The extension offers three modes: random noise, session-persistent noise, and fixed noise for persistent but unique identities. It supports protecting all frames including cross-origin and sandboxed iframes, notifies users upon fingerprint detection, and allows customized blocking per hostname. Unlike complete disabling, it subtly alters only specific canvas methods to block fingerprinting without breaking functionality.

Canvas fingerprinting is a tracking method exploiting the HTML5 canvas to generate a unique user hash, bypassing traditional cookies. Using Canvas Blocker alongside ad blockers like uBlock Origin can significantly improve online anonymity and security.

Add-on Privacy & Security Productivity Utilities

By:

Joue

Daily users:

333 6

Rating:

3.64

(14)

Version:

0.2.2 Last updated: 2025-04-24

Version code:

5936026

Creation date:

2018-03-03

Risk:

Permissions:

notifications
storage
contextMenus
scripting

Host permissions:

*://*/*

Size:

63.64KB

URLs:

Website

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-17

Ranking

# 5,617 ▲ 62

Other rankings

#22 in protect keyword 45

#65 in prevent keyword 30 ▲ 4

#95 in ad-blocking keyword 95

#95 in print keyword 62 ▼ 1

#125 in detect keyword 20 ▲ 3

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Other platforms

Canvas Blocker - Fingerprint Protect (v0.2.2)

60,000 4.16

(44)

Canvas Blocker - Fingerprint Protect (v0.2.2)

7,133 5.00

(6)

User reviews

by 全民*****, 2025-03-23

by 敬念*****, 2025-02-24

Thanks to the developers.

by Fi*****, 2024-03-19

View all user reviews ›

Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

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

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Canvas Blocker - Fingerprint Protect is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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