Is this an ad blocker?
No. Ad blockers exist to remove ads from the page. Stigma exists to show you tracking and block it at the source. Ad infrastructure and tracking infrastructure often overlap, so blocking advertising trackers reduces some ads as a side effect, but removing ads isn't the goal. For a full ad-free experience, run Stigma alongside uBlock Origin.
What about companies like Meta or Google who already have my data?
Stigma can't delete what they already have. What it can do is stop the next layer from forming. Blocking trackers now keeps today's browsing from feeding into the same profile. Pulling back data that's already out there is a bigger problem, and that's what we're working on next.
Does Stigma conflict with my existing privacy tools?
No. Stigma plays well with uBlock Origin, Privacy Badger, Ghostery, and others. If you already run one, Stigma may show fewer trackers on most sites because your other tool stopped them upstream. That's not a bug. It's your stack working.
How is Stigma different from Privacy Badger or Ghostery?
Stigma's core difference is legibility. Other tools block quietly in the background. Stigma makes the tracking visible in plain language, gives you context for each tracker, and treats your understanding as the point rather than the afterthought.
Is it really free? What's the catch?
No catch. Stigma is free. No ads, no upsells, no data collection. If you want to support the work, you can donate. Future privacy tools may introduce paid tiers for advanced data-rights features, but Stigma itself stays free.
What data does Stigma collect?
None. No accounts, no servers, no analytics of any kind. The extension only has access to what happens inside your browser, and nothing about that leaves your machine. The source is on GitHub if you'd like to verify.
Which browsers does Stigma work on?
Stigma works on Chrome, Firefox, Edge, Brave, Arc, and other Chromium-based browsers. Chromium-based browsers (Chrome, Edge, Brave, Arc) install from the Chrome Web Store. Firefox has its own listing on
Firefox Add-ons. Same underlying build, same tracker database, same everything.