Canvas Defender

Instead of completely blocking canvas fingerprinting, Canvas Defender add-on creates a unique and persistent noise that hides your real canvas fingerprint. This add-on protects you while browsing both in normal and private mode.
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Canvas Defender is a powerful Chrome extension designed to protect your privacy against canvas fingerprinting—a technique used by websites to track users. Unlike traditional fingerprint blockers that completely block canvas APIs and may make you more identifiable, Canvas Defender introduces a unique and persistent noise to your canvas fingerprint. This spoofed identity effectively masks your real fingerprint without disrupting your browsing experience.

Compatible with both normal and private browsing modes, Canvas Defender gives you full control to drop or change your spoofed identity at any time. It is recommended for users leveraging multilogin tools to enhance privacy. Notably, MultiLoginApp users can skip this extension as it includes built-in canvas fingerprint spoofing. Protect your digital footprint with Canvas Defender and browse confidently without fear of canvas-based tracking.

Manifest V2 Add-on Privacy & Security Productivity Developer Tools
By:
Multilogin
Daily users:
3,102 -45
Rating:
3.63
(91)
Version:
1.1.1resigned1 Last updated: 2024-04-25
Version code:
5726630
Creation date:
2016-02-21
Risk:
High risk impact Low risk likelihood
Permissions:
  • webNavigation
  • tabs
  • storage
  • notifications
  • http://*/*
  • https://*/*
Size:
67.55KB
Email:
su*****@multiloginapp.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Browser Add-ons
Data ingested on:
2025-07-10

Ranking

# 1,535 ▼ 14
Other rankings
#170 in Web Development ▼ 1 #293 in Privacy & Security ▼ 1 #157 in defi keyword 32 ▼ 7

User reviews

Pros
  • Great for privacy
  • Excellent and fulfills its promises
  • Helpful notifications about fingerprint tracking
Cons
  • Annoying and abrasive notifications
  • Issues with eBay login due to reCaptchas
  • Causes color distortion when uploading photos
Recent reviews
I can't take the ridiculous notifications any more. Half the sites I visit make it pop up ding ding ding ding.
by Fi*****, 2025-03-16
great for privacy!!!!!!!!!
by bo*****, 2024-11-18
The extension is great, I like everything! :)))
by Va*****, 2024-08-05
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 Defender requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
  • High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
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 Defender has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details

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