To use Android extensions, you'll need Firefox for Android. To explore Firefox for desktop add-ons, please visit our desktop site.

Log in
Add-on icon

Reviews for CanvasBlocker

CanvasBlocker by kkapsner

4.6 Stars out of 5
5
380
4
41
3
21
2
10
1
24
476 reviews
  • by Firefox user 18415085, 2 years ago
    I love this extension, but it is breaking Linkedin right now. There is an issue open on github already, are there plans to fix this issue in the upcoming weeks?
  • by abdoun, 2 years ago
  • by volker01, 2 years ago
  • by Firefox user 18368977, 2 years ago
  • by Indogermane, 2 years ago
    Funktioniert einwandfrei. Ist dass Add-On sinnvoll, wenn man privacy.resistFingerprint aktiv hat (about:config) ?

    Developer response

    posted 2 years ago
    Ja, es bietet weitere Funktionalitäten. Siehe https://github.com/arkenfox/user.js/issues/767 und https://github.com/kkapsner/CanvasBlocker/issues/158
  • by Firefox user 18383988, 2 years ago
    Overall works well BUT, when protecting Navigator (choosing a different OS or browser, any of the 2) it is caught by https://iphey.com/

    Developer response

    posted 2 years ago
    Navigator protection is always tricky and you cannot hide it completely. But if I choose a different OS it does not get caught by this page. Maybe there is something additional that causes that in your setup.
  • by ValorBalorbus, 2 years ago
    Sometimes consumes up to 100 megabytes memory.

    Developer response

    posted 2 years ago
    Please open an issue at https://github.com/kkapsner/CanvasBlocker/issues with your details. This should not happen and I do not see a massive memory consumption.
  • by Firefox user 18252931, 2 years ago
  • by lowstar, 2 years ago
    It broke Google

    Edit: Okay, thank you.

    Developer response

    posted 2 years ago
    Please revert to version 1.9 - version 1.10.1 is in the works.

    See https://github.com/kkapsner/CanvasBlocker/issues/699 and https://github.com/kkapsner/CanvasBlocker/issues/700 for the progress of the solution.
  • by Dzpy, 2 years ago
    Thanks to the author.
  • by Tiger, 2 years ago
  • by Lily Pink, 2 years ago
    Very good
  • by emotwink, 2 years ago
    This particular extension draws too much power from my laptop. Otherwise it is working incredibly well.
  • by Zodd, 2 years ago
  • by folgoris, 2 years ago
  • by snadge, 2 years ago
    not perfect, but it helps, especially if it is used with other addons, it still doesn't randomize your fingerprint like BRAVE does, only BRAVE gets 3 yes's on EFF's 'cover your tracks' (Ads, Trackers, Fingerprints), or, this addon, with Ublock Origin, Privacy Badger, Local CDN and NoScript (is what I use on Librewolf) gets you all 3 yes's on EFF (1 in 900, so 'common as muck' fingerprint, and unable to track & trace through fingerprinting)
  • by Firefox user 18264023, 2 years ago
  • by 深鸣, 2 years ago
  • by LongLive, 2 years ago
  • by Firefox user 16648806, 2 years ago
  • by Firefox user 16700479, 2 years ago
  • by Júlio C. Oliveira, 2 years ago
    On coveryourtracks.eff.org shows "Your browser has a unique fingerprint" with a red line under it, And on the section of hash it shows "randomized by first party domain", So I guess it is working some way.
  • by Tixie, 2 years ago
  • by Firefox user 15124803, 2 years ago
  • by Nibinaear, 2 years ago
    Caused massive slow down when using ebay and other websites. Firefox identified it as causing slow down, task manager showed as 30% cpu usage for FF.

    Developer response

    posted 2 years ago
    There is little I can do about the problem with eBay. Whitelisting the DOMRect-API helps:
    https://github.com/kkapsner/CanvasBlocker/issues/555
    https://github.com/kkapsner/CanvasBlocker/issues/563

    That's why it's whitelisted in the convenience preset.