I have installed librawolf and I see that canvas access is disabled by default in all webpages so I started activating them when they bother me (whatsapp, youtube, element.io etc.). But then I figure that it is disabled for a reason. What should I pay attention to?
According to wikipedia
Canvas fingerprinting is one of a number of browser fingerprinting techniques for tracking online users that allow websites to identify and track visitors using the HTML5 canvas element instead of browser cookies or other similar means. The technique received wide media coverage in 2014 after researchers from Princeton University and KU Leuven University described it in their paper The Web never forgets.
https://en.wikipedia.org/wiki/Canvas_fingerprinting
Also if you just google “librewolf canvas disabled”, their FAQ shows up with the exact reason why https://librewolf.net/docs/faq/#should-i-allow-canvas-access-how-do-i-do-it
The FBI will literally storm ur house and kick your dog if you leave canvas enabled
There are a number of websites that can tell you if your browser’s fingerprint is unique and thus if you are trackable. Truth is, it always is because of the sheer number of variables involved, unless you’re willing to disable a lot more than canvas, which breaks a lot more websites. Even Tor is more private despite having so many of their nodes ran by governments.