I 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.