{"repo":"kkapsner/CanvasBlocker","free":true,"listed":false,"github":"https://github.com/kkapsner/CanvasBlocker","clone":"git clone https://github.com/kkapsner/CanvasBlocker.git","description":"A Firefox extension to protect from being fingerprinted.","language":"JavaScript","stars":1501,"topics":["web-extension","privacy","firefox","fingerprinting"],"license":"MPL-2.0","category":"self-hosted-apps","readme_excerpt":"CanvasBlocker ===== This add-on allows users to prevent websites from using some Javascript APIs to fingerprint them. Users can choose to block the APIs entirely on some or all websites (which may break some websites) or just block or fake its fingerprinting-friendly readout API. IMPORTANT : you should only have ONE addon/setting set that protects an API. Otherwise you could face massive performance issues. (E.g. EclipsedMoon for Palemoon has 'canvas.poison' which is known to cause issues: https://github.com/kkapsner/CanvasBlocker/issues/253#issuecomment-459499290) But setting privacy.resistFingerprinting to true and/or using the new fingerprinting protection introduced with Firefox 67 is fine. ----- Protected \"fingerprinting\" APIs: canvas 2d webGL audio history window (disabled by default) DOMRect SVG TextMetrics navigator (disabled by default) screen More information on fingerprinting can be found at: <canvas>: https://www.browserleaks.com/canvas audio: https://audiofingerprint.openwpm.com/ (very poorly written = slow) https://webtransparency.cs.princeton.edu/webcensus/#audio-fp DOMRect: http://jcarlosnorte.com/security/2016/03/06/advanced-tor-browser-fingerprinting.html https://browserleaks.com/rects https://github.com/ghacksuserjs/ghacks-user.js/wiki/Appendix-A---Test-Sites ----- Beta versions can be found at https://canvasblocker.kkapsner.de/versions/. ----- The different block modes are: fake: Canvas Blocker's default setting, and my favorite! All websites not on ","default_branch":null,"files":null,"tree":[],"storefront":"/r/kkapsner","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/kkapsner/CanvasBlocker/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}