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kkapsner
CanvasBlocker
JavaScript2015–2026
kkapsner / CanvasBlocker

CanvasBlocker

A Firefox extension to protect from being fingerprinted.

10Distinct people
10Mentions
0Explicit recommenders
1.5KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

A Firefox extension to protect from being fingerprinted.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year10 dated mentions

Observed mentions: 2015-02-28 17:08:16 UTC to 2026-06-01 05:52:06 UTC.

01232015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments20152016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC101
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC000
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC000
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC303
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC303
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC000
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC000
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC101
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC000
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC000
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC000
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC202

What Hacker News says

10 sources
Talking about mass surveillance: After taking the usual measurements against cross-site browser tracking- who knows most about my website visits? Meta, Google or Cloudflare? Blocking me from site visits with fingerprinting shut off, forces all my traffic back into the CF funnel. Number of websites soaring. Try it yourself https://sereneblue.github.io/chameleon https://github.com/kkapsner/CanvasBlocker/ and you're increasingly off.
In Cloudflare Turnstile requiring fingerprintable WebGL
> Or they are aware and lying, which begs the question of how we can trust anything else. It raises the question [...]. I'd also say that while your points are valid, its perhaps a bit too black/white to completely distrust them based on such a statement. On the other hand, who's behind this browser exactly? With Mozilla Firefox, Mozilla is behind it, and development is in the open. For Mozilla Firefox I can recommend CanvasBlocker [1] to mitigate the technique you described. However, it comes at a price: you'll have a harder time with captcha's. [1] https://github.com/kkapsner/CanvasBlocker/
In Waterfox Browser
Blocking your canvas to avoid being fingerprinted/tracked is like walking under the CCTV with a hoodie and cap on. Unless everyone under the CCTV does the same you will not be detected but will be tracked. It might be hard to identify you but you will standout. So instead of standing out of the crowd why not disguise so well that the tracker doesn't know the real you. The idea is to use something that gives a fake readout of your fingerprint thus making you look normal but keep changing it occasionally so it leads no where for long time. Try Canvas blocker[1] and/or Canvas Defender for fake readout. [1]https://github.com/kkapsner/CanvasBlocker
In Facebook Container for Firefox

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