Websites Are Tracking You via Browser Fingerprinting

Re:Websites Are Tracking You via Browser Fingerprinting by jpalawaga on Wednesday June 18, 2025 @08:12PM (#44314352)

Has anyone made a plugin that forces your browser to resize slightly to help avoid fingerprinting? I feel like this is an annoyance I could tolerate, even if over the course of a day or two it causes me to resize it manually to something larger.

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Re:Websites Are Tracking You via Browser Fingerprinting by zeech on Wednesday June 18, 2025 @08:28PM (#44314408)

The name for that is letterboxing. The Tor Browser (and the Mullvad browser, based on the Tor one, and Firefox as of v. 67 with an about:config flag) all support it.

There are also add-ons that perform the same basic function with some added customisability [0].

[0] https://addons.mozilla.org/en-US/firefox/addon/canvasblocker...

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Re:Websites Are Tracking You via Browser Fingerprinting by paulryanrogers on Wednesday June 18, 2025 @08:33PM (#44314424)

They've been around a while. Here's the top Google Result: https://chromewebstore.google.com/detail/canvas-fingerprint-...

I think Privacy Badger may also do it.

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Re:Websites Are Tracking You via Browser Fingerprinting by ohso4 on Wednesday June 18, 2025 @08:40PM (#44314450)

Plugins are an issue themselves. They're used for fingerprinting too!

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Re:Websites Are Tracking You via Browser Fingerprinting by handsclean on Wednesday June 18, 2025 @09:12PM (#44314596)

Firefox has this built in, about:config privacy.resistFingerprinting.letterboxing. It was contributed upstream by Tor, and off by default in Firefox.

Edit: I think I misunderstood you, you’re looking for something that adds changing noise to the viewport size. Letterboxing isn’t that, but it is another, arguably better, approach to reducing the same fingerprinting vector.

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