v151 · performance · navigation response
This navigation carried the header
The document you are reading arrived with the Performance-Observer and Reporting-Endpoints response headers below — the navigation-time activation the explainer describes, not a post-load subresource fetch.
In a browser that implements the proposal, loading this page has just activated browser-side recording for this session; the consolidated report will be delivered to the (token-scoped) report endpoint when the session ends. In today's browsers nothing is recorded — that absence is the honest current state.
headers on this navigation response
Performance-Observer: report-to="telemetry"
Reporting-Endpoints: telemetry="https://chrome-platform-showcase.paulkinlan-ea.deno.net/v151/declarative-performance-observer/report"check for a delivered report
No visitor token was included, so any browser-delivered report will be counted but not stored. Re-open this page from the header-anatomy builder to include your token.