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ProTip: If you enabled resistFingerprinting, you have to manually allow HTML5 canvas usage per website (mastodon.social)

submitted 7 months ago by [email protected] to c/[email protected]

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My apologies to the Bugzilla team for wasting their time holding my hand on this one. Would have honestly never noticed the little "HTML5" info icon to the left of the URL bar though without their help.

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[–] [email protected] 27 points 7 months ago (2 children)

The resist fingerprinting mode scrambles canvas read out to prevent sites from using it to create a fingerprint. Because of that, any site that needs to read the canvas back for legitimate purposes will also receive scrambled data. You get more privacy for the minor inconvenience of having to manually allow canvas usage for the sites that actually need it.

[–] [email protected] 16 points 7 months ago

Yes I’m aware, but the user interface doesn’t make it easy to understand A) why the canvas looks scrambled, and B) how to permit it on a per-site basis.

The technical implementation is fine, it’s just the user workflow that needs fixed.

[–] [email protected] 4 points 7 months ago

And very few sites actually need it.