To use these add-ons, you'll need to download Firefox.

Log in
Add-on icon

Reviews for CanvasBlocker

CanvasBlocker by kkapsner

4.6 Stars out of 5
5
339
4
34
3
18
2
10
1
17
418 reviews
  • by Firefox user 15236507, 4 years ago
    Thanks for providing such a good add-on, which has been a great help to my life. Recently, firefox mobile version of a major update, many add-ons are no longer applicable, and your plug-in is my daily life is necessary, I beg you to adapt to the latest mobile version of the framework as soon as possible.

    Developer response

    posted 4 years ago
    Unfortunately there is nothing I can do about that. Mozilla dropped add-on support in Fenix except for some hand picked ones. CanvasBlocker is not part of that list (it is not "recommended" by Mozilla).

    It's up to Mozilla to decide on add-ons in Fenix: https://blog.mozilla.org/addons/2020/09/02/update-on-extension-support-in-the-new-firefox-for-android/
  • by Kovu, 4 years ago
  • by Firefox user 16285268, 4 years ago
  • by Firefox user 16277808, 4 years ago
    Great lightweight extension that can help protect your privacy by giving randomised readouts when websites try to fingerprint you. Best used in conjuction with other privacy tweaks such as blocking third party cookies, and using an ad/tracker blocker like uBlock Origin.
  • by Tibs, 4 years ago
    A good add-on with tons of settings, and information regarding them. Not a fan of the UI, though. The add-on window, only shows 5 options, and one search bar. I would like to see this expanded with more options relating to what's being blocked/altered (or is not), whitelisting, and so on. The main add-on Settings page also looks ugly, but at least it's functional.

    Overall, I would suggest this add-on to others. I found it does a better job than competition, which considering how much there is, is pretty impressive.

    Developer response

    posted 4 years ago
    You can find the information about what is blocked/faked in the page action menu by clicking on the fingerprint icon in the address bar.
  • by Firefox user 13950755, 4 years ago
  • by Knniff, 4 years ago
  • by Firefox user 15280388, 4 years ago
  • by quirK, 4 years ago
    Whitelisting works, and even has 2 different kinds of whitelisting. The global one, as well as the one by API breakdown. Both need to be updated in terms of UI response and have a better and faster way of adding a website. No easy way to set a safe setting that *just works*, something always breaks and there's no easy "whitelist this specific breakage" button available.

    Developer response

    posted 4 years ago
    The whitelisting is working for me. Please open an issue at https://github.com/kkapsner/CanvasBlocker/issues with your specific problem and your setting.

    I mostly use default settings and have no whitelist defined. Please also mention the web sites that break in your issue.

    How the whitelist button can be found is explained here for example: https://github.com/kkapsner/CanvasBlocker/issues/330

    PS: the UI is a topic I want to tackle in the near future.
  • by Firefox user 16159551, 4 years ago
  • by Alicia Sykes 🚀, 4 years ago
  • by Firefox user 15005409, 5 years ago
  • by RDT1, 5 years ago
    The perfect add on to stop HTML5 Canvas Fingerprinting. Throwing on block all excluding whitelist shows just how many sites become unusable with their tracking. Even trusted sites like Duckduckgo.com, reddit.com etc.. keep up the good work!
  • by KxNdrLXKSUPmcImWBIYhr, 5 years ago
  • by Ano Nymous, 5 years ago
    An sich funktioniert das AddOn sauber.
    Ein Stern abzug gibt es für das etwas fummlige Menü und es bremmst den Browser merkbar aus.

    Selbst beim Browser-Start braucht es ein paar Sekunden, bis es 100% läuft.
  • by Craig, 5 years ago
  • by Firefox user 16117914, 5 years ago
  • by Firefox user 14463164, 5 years ago
  • by Sean, 5 years ago
  • by dlrka, 5 years ago
  • by spodermenpls, 5 years ago
  • by DomRay, 5 years ago
    Dear，how can I change language of the addon

    Developer response

    posted 5 years ago
    The language of the addon is controlled by Firefox and should be the same like the other UI of Firefox (if CB is translated to that language). If this does not work properly pleas comment at https://github.com/kkapsner/CanvasBlocker/issues/479 with the language your Firefox is and the language that is displayed instead.
  • by Cercion, 5 years ago
  • by The GodFather, 5 years ago
    This is a very helpful extension. Could you add a whitelist button directly in the app menu ?

    Developer response

    posted 5 years ago
    There is a whitelist button in the "fingerprint" menu. In https://github.com/kkapsner/CanvasBlocker/issues/330 is a screenshot of how to find it.
  • by 中二, 5 years ago
    居然有中文界面，惊喜。

    Developer response

    posted 5 years ago
    Yes - the people translating on https://crowdin.com/project/canvasblocker are very helpful. Thanks to you all.