# Canvas Fingerprint Blocker privacy rating

Browser extension that adds noise to HTML5 canvas output to resist canvas fingerprinting without disabling the canvas element.

## Summary

Canvas Fingerprint Blocker scores 30 out of 100 (grade F) on the browser extensions criteria. It meets 1 of 4 criteria: open source. It does not meet no trackers or telemetry, no ads or data sales and independent audit.

- Website: https://webextension.org/listing/canvas-fingerprint-blocker.html
- Source code: https://github.com/joue-quroi/canvas-fingerprint-blocker
- Home page trackers: Cloudflare Web Analytics (cookieless analytics), Google AdSense, Google Analytics, Google reCAPTCHA (not scored), Google Tag Manager
- Category: [Browser extensions](https://privacyratings.com/browser-extensions/)
- Grade: F (30/100)

## Criteria

| Criterion | Answer | Note | Evidence |
| --- | --- | --- | --- |
| Open source | Yes | Released under MPL-2.0 on the add-on listing; the source repository itself has no license file. | https://addons.mozilla.org/en-US/firefox/addon/canvas-blocker-no-fingerprint/ |
| No trackers or telemetry | No | The home page loads Google AdSense, Google Analytics and Google Tag Manager (automated test). |  |
| No ads or data sales | No | The project website shows Google AdSense ads. |  |
| Independent audit | No | No independent audit is published. |  |

Source: https://privacyratings.com/browser-extensions/canvas-fingerprint-blocker/
Edit: https://github.com/privacyratings/privacyratings.com/edit/main/ratings/browser-extensions/canvas-fingerprint-blocker.md