Demystify how digital metrics are collected.

User agent, viewport, language, timing, and campaign parameters are already on the page. Reading them is not the same as sending them.

Every request the page makes is a row in Resource Timing, including a first-party beacon once you allow one. Third-party hosts would show up beside them.

The beacon arrives at an API route in this app. The server adds the time it received it, a parsed user agent, and any edge headers, then stores the record in the database. A signed-in account can read and delete those rows.