Browser Signal Lab
A local-only check showing what ordinary JavaScript can observe after you choose to run it. Results stay on the page.
- Local only.
- No tracking.
- No storage.
- No network request.
- No persistent visitor ID.
Run a check below to summarize observable browser values before the detailed rows. This is not a uniqueness score.
Reads basic browser-exposed values after you choose to run it.
Runs small local rendering and audio probes to show how browser environments can differ.
Practical ways to reduce unnecessary browser exposure.
- Use privacy-focused browser settings where appropriate.
- Keep browser and graphics drivers updated.
- Limit unnecessary extensions.
- Consider separate browser profiles for sensitive work.
- Blocking trackers helps, but fingerprinting can work without cookies.