I built a cross-browser extension that controls fingerprinting surfaces
Hello Hacker News! I’m Tomasz, creator of Privacy Thing, a browser extension for Firefox and Chromium-based browsers. I’ve just released its Preview version. Privacy Thing aims to reduce browser fingerprinting—the tracking of users without cookies. It began as an internal project: a simple location simulator. Over time, I expanded it to cover more fingerprinting surfaces. It now has 13 protection categories affecting 50+ browser APIs and methods: Geolocation, time and locale settings, Canvas, WebGL, Audio, Navigator, Screen, Client Hints, Battery, WebRTC, Dedicated Workers, Service Workers,…
I built a cross-browser extension that controls fingerprinting surfaces launched on July 31, 2026 with 20 votes, #875 of 24,623 launches that month and more than 90% of that year's launches.
In plain words
Privacy Thing is a browser extension for Firefox and Chromium-based browsers that reduces browser fingerprinting by masking tracking data across 50+ browser APIs. It covers 13 protection categories including geolocation, canvas, WebGL, audio, screen settings, and WebRTC. Users can configure global protection settings or create domain-specific rules with regional profiles to control how different websites see their browser information. The extension is fully customizable, allowing granular control over what data each site can access.
written from the facts on this page · September 2026
From the sources
Use X-Ray to inspect supported browser activity. Set location, language, and time-zone values for individual domains.
Source code Download Features How it works Help Source code Download See more. Share less. See what a site checks and decide which browser data it receives. Give every domain its own location, language, and time zone — Privacy Thing applies consistent, plausible values automatically as you browse. The Preview is available in the Chrome, Firefox, and Edge stores. One browser. Many websites. Different rules. 01 Create or choose a preset Save location, language, and time zone in a Regional Preset. Choose an exact host or domain pattern, then assign the preset. Open the website and use X-Ray to confirm the active rule and see which supported categories the site used. Privacy Thing changes the…from privacything.com
In the maker’s words, at launch
Hello Hacker News! I’m Tomasz, creator of Privacy Thing, a browser extension for Firefox and Chromium-based browsers. I’ve just released its Preview version. Privacy Thing aims to reduce browser fingerprinting—the tracking of users without cookies. It began as an internal project: a simple location simulator. Over…
Does a similar job
all alternatives →
Privacy.com for Firefox2017 · privacy.com · ▲261Get a new card for every purchase with just one click
What every browser knows about you2016 · webkay.robinlinus.com · ▲553This is a demonstration of all the data your browser knows about you. All this data can be accessed by any website without asking you for any permission.
DuckDuckGo Privacy App & Extension2018 · duckduckgo.com · ▲357Privacy, simplified. Available on all major platforms.
Ghostery Privacy Browser2018 · ghostery.com · ▲104Private, fast, tracker and ad-free mobile browsing
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Source: Show HN post ↗ · launch text quoted in part
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