- Rated 3 out of 5by Firefox user 15183223, 3 months agoThere is a little problem with it... this extension is used by a relatively small community. When a site makes a fingerprint of your browser, the part of the fingerprint is the used extensions... If you can't hide your extension, then the existance of it with some other parameters are enough to track you. IMHO
- Rated 3 out of 5by Teagan, 7 months agoI would like to give this Add-On more then 2 1/2 stars (which is what I selected but it's showing 3 starts). In general, it does seem to work with some flaws. For me, my biggest issue, or what annoys me about all add-ons, is that they will always slow down your browser and CanvasBlocker is no exception to this. It does slow down my browser quite a bit, but I suppose that can vary from user to user depending on what you've selected as its settings. So don't be surprised if it does slow down your browser.
If you are using the Privacy Badger Add-On, expect the Add-On's to conflict with each other a lot, or from time to time. Depending on the type of internet user you are (or Netizen); if you are normally intimidated by what seems to be a complicated Add-On with lots of options to select, or you don't know what DOMRect, webGL, or APIs means, don't let that discourage, or prevent you from using it. Take your time to read how to use this extension (Add-On) and you should be good.
Developer responseposted 6 months agoYou can try the different presets to check which one fits your need best.
I notice much better performance when I disable notifications for DOMRect: https://github.com/kkapsner/CanvasBlocker/discussions/638#discussioncomment-5313863
- Rated 3 out of 5by Mike S., a year agoWorks, but slows some sites to a crawl (i.e., eBay). Settings are hard to understand. Unclear how to whitelist a site.
Developer responseposted a year agoFor eBay you can check the discussion on https://github.com/kkapsner/CanvasBlocker/issues/555 and https://github.com/kkapsner/CanvasBlocker/issues/563
The best way to whitelist a site is over the little fingerprint icon in the URL bar.
Optimizing the settings is on my todo but it's hard as I'm not a UX/UI person...
- Rated 3 out of 5by ko to, a year agoНа насыщенных страницах типа youtube, google docs вызывает перманентное повышенное потребление процессора
Developer responseposted a year agoI assume you meant CanvasBlocker with "google docs"...
You should check which API protection is causing the CPU usage and consider allowing this API on these sites. Also ignoring the DOMRect API in the notifications (you have to enable the expert mode to be able to do that) can help massively with performance problems.
- Rated 3 out of 5by Сергей Братуха, 3 years agoПлохо, что нельзя установить на Firefox для Android. А в остальном отличное дополнение!
Developer responseposted 2 years agoCanvasBlocker is ready for Firefox on Android and was available before Fenix. But in Fenix they only allow a small set of WebExtensions (https://addons.mozilla.org/de/firefox/collections/4757633/7dfae8669acc4312a65e8ba5553036/). You can help to get CanvasBlocker part of this list by suggesting it to the recommended programm (https://github.com/kkapsner/CanvasBlocker/issues/553).
- Rated 3 out of 5by Firefox user 16503620, 3 years agoThis add-on needs instructions on how to use. If present already they need to be easier to find.
Developer responseposted 3 years agoUsually you install the addon, select a preset that matches your needs and you are good to go.
Please open an issue at https://github.com/kkapsner/CanvasBlocker/issues with a description of what you want instructions for. There we can communicate better and you can follow the progress on the subject.
- Rated 3 out of 5by Fraaggle, 4 years agoNice addon, but why it needs reading and changing privacy settings? This is new after the last update. Why you need that now?As discussed in https://github.com/kkapsner/CanvasBlocker/issues/438:
The access to the privacy setting is needed to display the notice for privacy.resistFingerprinting. So it's not that important but unfortunately I cannot make it optional.
CB only reads that and does not write any privacy settings: https://github.com/kkapsner/CanvasBlocker/search?q=%22browser.privacy%22&unscoped_q=%22browser.privacy%22
- Rated 3 out of 5by Ali, 4 years agoI can't find a way to exclude Google Maps (unless I exclude all of Google, which I don't wanna). And this makes Google Maps totally hang always.
So, basically either this add-on or Google Maps.
Would be 5 stars if it had a better way of excluding URL patters.
- Rated 3 out of 5by Adam, 4 years agoSettings are overly complicated.I always try to simplify the settings, but the subject is complicated. If you have specific settings that you think should be simpler you are welcome to open an issue at https://github.com/kkapsner/CanvasBlocker/issues with your suggestions.
- Rated 3 out of 5by whis, 5 years agoHelp me: I changed a parameter i do not know which one and i think that because of that i can not solve the captchas anymore! :(
I get this message every time :
" Your computer or network may be sending automated queries. To protect our users, we can't process your request right now. For more details visit our help page "
I cleared the cache and cookies of firefox but the problem is still there! what to do?Please open an issue at https://github.com/kkapsner/CanvasBlocker/issues with more details
There we can communicate much better.
But as a first measure you could reset the CanvasBlocker settings.
UPDATE: it's known that the protection for the window API breaks recaptcha. If you disable and reenable it you should be prompted with a question to whitelist the specific url that is needed by it.
- Rated 3 out of 5by Firefox user 13268901, 5 years agoWhat happened to the fingerprint icon up in the toolbar on android FF? It is now gone so how do I know if CB is functioning correctly?The fingerprint icon should be present if you have notifications enabled and something was faked on the page.
You can check if CB is working on the test pages (e.g. https://canvasblocker.kkapsner.de/test/test.html - the hashes should change on reload).
Please open an issue at https://github.com/kkapsner/CanvasBlocker/issues - there we can discuss better.
This issue is solved in 0.5.5
- Rated 3 out of 5by Clemens Ratte-Polle, 5 years agoWhere can i test the success of CanvasBlocker?
Does it make problems with twitter header image upload?
i got probsYou can go to http://kkapsner.github.io/CanvasBlocker/test/test.html and check if the displayed hash changes on every reload.
I know of no problems with twitter. But if you think that it is CB related please open an issue at https://github.com/kkapsner/CanvasBlocker/issues - there we can communicate much better.
- Rated 3 out of 5by Firefox user 14072583, 6 years agoDoes not work according to fingerprint test at https://panopticlick.eff.org/
Developer responseposted 6 years agoWhat do you mean with "does not work"? Please open an issue at https://github.com/kkapsner/CanvasBlocker/issues where we can communicate better and therefore I can help better.