Privacy Policy
Last updated: 11 November 2026.
The short version
The bufferbloat test runs entirely in your browser. During a test your browser downloads small files from this site and measures how long the round-trips take — nothing is uploaded to us except the standard request your browser makes. We set no cookies and use no third-party trackers by default.
Data we process
| Item | What it is | Where it goes |
|---|---|---|
| Test requests | Your browser fetches /payload.bin (a few MB) and pings the page it is on, all to dnsworker.com | Served by Cloudflare (our host); standard access logs: IP, timestamp, byte count |
| Latency / score / verdict | Computed locally in your JavaScript | Never leaves your device |
| Analytics | Umami (self-hosted, privacy-first): one event per page view with a truncated page path | Our own server, no cookies; see below |
Analytics
We track basic pageviews with a self-hosted, cookie-less counter (Umami). It records a short hash of the page path for internal traffic decisions; it does not set tracking cookies or build an ad profile, and it is only active when the snippet loads — a browser ad-blocker that skips it simply means no counting, nothing breaks.
Outbound links
Some links go to external sites (Amazon, OpenWrt forums, GitHub, manufacturer
pages). When we earn a commission — Amazon Associates links on the
router comparison — they are marked
rel="sponsored". External sites have their own privacy policies.
Children / international readers
The site does not knowingly collect personal data from children. For readers in the EU/UK: Cloudflare (US) processes request data as a processor on our behalf; ask us for a copy or deletion of anything stored — email is below.
Contact
See our contact page — we answer email from the address there.