One of the essential plugins for everyone that care about anonymity when you surf on the web. If you stay on one of the 2 lowest settings you can increase your anonymity dramatically on the web without breaking functionality, so you can surf the web pretty much like everyone else without even noticing it while still staying hard to identify if you for example combine this with VPN. This alone will help but its one of several other key plugins you should install to shield yourself against tracking on the web.

Great privacy-focused extension that helps protect against fingerprinting. It blocks or fakes the data that websites use to track your device without your consent. I like that you can customize how strict it is for each site, so if something breaks, it’s easy to adjust. It runs quietly in the background and doesn’t slow things down. A must-have for anyone who cares about online privacy and wants more control over what sites can learn about their system.

Really good

Seems to work, if you test it at browserleaks(dot)com / canvas with the plugin on, keeps giving new signatures at each refresh, if you turn the plugin off, the signature will remain the same

Doesn't seem to work. Visited the EFF page (coveryourtracks.eff.org) to check fingerprinting and no luck.

Works very well. If you want to test this addon whether it works or not, just visit the page which is mentioned in the description. (for example: browserleaks website)

It's just a shame that I only recently discovered canvas fingerprinting, even though it's been around for so long. Keep your privacy up folks.

memory leak on YouTube

I became suspicious when there is no tally count, so I went to coveryourtracks.eff. ran the fingerprinting scan and found the app was doing absolutely nothing at all but sitting in my browser collecting info.I will be removing it.And running a system malware scan.

I like the concept of the addon but this is basically useless until the developer explains literally anywhere how to add sites to the whitelist and the settings page doesn't absolutely suck.

Only really useful if you are the developer and understand all of the obtuse menu options.

No instructions on how to use it. Not intuitive to use. I have not a clue if it is doing anything because of this. I will leave it on incase it is working. It would be better as an app to work all the time my device is on rather than just inside my browser.

An sich ein wirklich klasse AddOn, was Webseiten definitiv zu schaffen macht.
Leider bremmst es den Browser je nach Seite extrem aus.
Gerade Karten-Webseiten wie z.B. Google Maps sind teilweise unbenutzbar, wenn der CanvasBlocker zuschlägt.

Der Blocker von Firefox selbst, ist hier etwas harmloser, dafür aber auch von der Block-Qualität schlechter.

Made my rating on EFF's CoverYourTrack tool worse!