Font Fingerprint Defender

Defending against Font fingerprinting by reporting a fake value.
What is Font Fingerprint Defender?
"Font Fingerprint Defender" is a Firefox plug-in that enhances internet privacy. It disguises the real font fingerprint of a user by randomly generating fake ones to protect from potential tracking. This add-on doesn't directly block fingerprinting but obfuscates the real one by adding noise. It offers user-friendly implementation without the need for adjusting settings or options.
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Add-on stats

By: ilGur
Version: 0.1.4 (Last updated: 2022-11-10)
Creation date: 2019-08-25
Weekly download count: 130
Firefox on Android: Yes
Risk impact: Moderate risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • storage
  • contextMenus
  • notifications
Size: 43.07K
URLs: Website

Ranking

# 2048 ▼ 22
Other rankings
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Other platforms

Font Fingerprint Defender (v0.1.5)
3.45 (20) 10,000
Font Fingerprint Defender (v0.1.5)
5.00 (2) 2,039
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Add-on summary

Analyze keywords

Font Fingerprint Defender is a lite addon that let you easily hide your real font fingerprint by reporting a random fake value and protect your privacy.

This addon does NOT block the fingerprint, instead, it simply adds a small noise to the actual fingerprint and "renews" it every time you visit a website or reload a page. It is important to note that, this addon does not have any settings or options to adjust. Simply add it to your browser and start surfacing the internet. If you want to test this addon, please visit a website that show your fingerprint (i.e. webbrowsertools.com/font-fingerprint/). Every time you reload the page, you will see a new fake fingerprint.

Note 1: depending on your browser and platform, you may need to (Shift+Refresh) a web page to renew Font fingerprint.

Note 2: If you also want to protect your browser against other types of fingerprints, please see my other addons: Canvas, AudioContext and WebGL Fingerprint Defenders.

Note 3: To report bugs, please visit addon's homepage and fill the bug report form.

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Creates a new fingerprint value with every page view
  • Effectively spoofs font fingerprints
  • Unobtrusive and does what it claims
  • Positive experiences reported in privacy tests like EFF's Cover Your Tracks
Cons
  • Breaks functionality on some websites (e.g., Jellyfin)
  • Issues with desktop notifications
  • Concerns about being detectable by tracking companies
  • Worsens fingerprint uniqueness in some cases according to Panopticlick
Most mentioned
  • Works well for spoofing
  • May break some sites
  • Creates a different fingerprint each time
  • Notification issues
Recent reviews
Great
by zeblur, 2024-11-21
by dte28, 2024-10-11
Starts to break some sites after the last Firefox update
by Max, 2024-07-02
View all user reviews

Add-on safety

Risk impact

Font Fingerprint Defender requires a few sensitive permissions. Exercise caution before installing.

Risk likelihood

Font Fingerprint Defender has earned a fairly good reputation and likely can be trusted.

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