Who is CanvasBlocker for?

CanvasBlocker is an open-source project built for privacy-conscious Firefox users.

Does CanvasBlocker have a free plan?

Yes — CanvasBlocker is free to use.

What platforms does CanvasBlocker run on?

CanvasBlocker runs on the web and embeddable surfaces.

Is CanvasBlocker still active?

Unverified. CanvasBlocker has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to CanvasBlocker?

Similar projects tracked by PulseGate include Canvas Privacy Protection, CornBlocker, and Tracking Blocker.

Who makes CanvasBlocker?

CanvasBlocker is developed by kkapsner.

When did CanvasBlocker launch?

CanvasBlocker first shipped in 2014.

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CanvasBlocker

Name: CanvasBlocker
Author: kkapsner

github.comVPN, proxy & anonymity

CanvasBlocker is an open-source Firefox extension that reduces browser fingerprinting by controlling canvas and related fingerprinting APIs. It is intended for users who want stronger browser privacy and anti-tracking protections.

FreeWebEmbeddable

Visit github.com

Overview

5 features

CanvasBlocker sits in PulseGate's VPN, proxy & anonymity category. It focuses on preventing websites from identifying or tracking users through canvas-based browser fingerprinting. It is built as an open-source project for privacy-conscious Firefox users. It is available for free. CanvasBlocker is available on the web and embeddable surfaces.

It is developed by kkapsner, and it first shipped in 2014. Key capabilities include canvas protection, fingerprinting defense, and API blocking.

Summary written by a language model from the project’s public pages.

Canvas protection
Fingerprinting defense
API blocking
Permission controls
Firefox integration

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSFree tierStore-verified publisher

Indexing history

What PulseGate has recorded for this listing

Indexed7 Sep · 23:22 UTC
CanvasBlocker verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about CanvasBlocker

What is CanvasBlocker?: CanvasBlocker focuses on preventing websites from identifying or tracking users through canvas-based browser fingerprinting. It is catalogued under VPN, proxy & anonymity on PulseGate.
Who is CanvasBlocker for?: CanvasBlocker is an open-source project built for privacy-conscious Firefox users.
Does CanvasBlocker have a free plan?: Yes — CanvasBlocker is free to use.
What platforms does CanvasBlocker run on?: CanvasBlocker runs on the web and embeddable surfaces.
Is CanvasBlocker still active?: Unverified. CanvasBlocker has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to CanvasBlocker?: Similar projects tracked by PulseGate include Canvas Privacy Protection, CornBlocker, and Tracking Blocker.Canvas Privacy Protection CornBlocker Tracking Blocker
Who makes CanvasBlocker?: CanvasBlocker is developed by kkapsner.
When did CanvasBlocker launch?: CanvasBlocker first shipped in 2014.

At a glance

Pricing: Free
Platforms: Web
Languages: English
First seen: 7 Sep 2026
Built for: privacy-conscious Firefox users
Model: Open source
Solves: Preventing websites from identifying or tracking users through canvas-based browser fingerprinting.

Registered as

Firefox Add-ons: canvasblocker

Developer

kkapsner

Index record

Indexed: 7 Sep 2026
Lifecycle: Alive
First seen: Sep 2026
Last seen: 7 Sep 2026

Identity audit (13)

Slug: canvasblocker-github-com
Lifecycle last checked: 8 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 7 Sep 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 7 Sep 2026
Canonical URL: https://github.com/kkapsner/CanvasBlocker

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