coderef

Reporting APIBaseline · Newly available

The Reporting-Endpoints HTTP header and ReportingObserver() API send selected reports, such as Content Security Policy (CSP) violation reports or crash reports, to a nominated URL or callback function.

Works in the latest version of every major browser, but older devices may not support it yet. Baseline since Mar 24, 2026.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–95Not supported
96+Supportedsince Nov 15, 2021
Current: 155
Edge
12–95Not supported
96+Supportedsince Nov 19, 2021
Current: 154
Firefox
1–148Not supported
149+Supportedsince Mar 24, 2026
Current: 157
Safari
1–16.3Not supported
16.4+Supportedsince Mar 27, 2023
Current: 27
MobileChrome Android
18–95Not supported
96+Supportedsince Nov 15, 2021
Current: 155
Firefox Android
4–148Not supported
149+Supportedsince Mar 24, 2026
Current: 157
Safari iOS
1–16.3Not supported
16.4+Supportedsince Mar 27, 2023
Current: 27

How to use

Every current browser supports this, but it only became Baseline on Mar 24, 2026. Use it as a progressive enhancement, or keep a fallback if you support older devices.

Example

Full syntax and examples are on MDN: ReportingObserver.

Feature detection

JS · check before using
if ("ReportingObserver" in globalThis) {
  // ReportingObserver is available
} else {
  // load a polyfill or use a fallback
}

Documentation (MDN)

Specification

Sub-features

Support for each part of the feature (9). The overall table above shows when the whole feature works.

Sub-featureChromeEdgeFirefoxSafariChrome AndroidFirefox AndroidSafari iOS
ReportingObserver697914916.46914916.4
ReportingObserver.ReportingObserver697914916.46914916.4
ReportingObserver.ReportingObserver.options_parameter697914916.46914916.4
ReportingObserver.ReportingObserver.options_parameter.types_property697914916.46914916.4
ReportingObserver.disconnect697914916.46914916.4
ReportingObserver.observe697914916.46914916.4
ReportingObserver.takeRecords697914916.46914916.4
ReportingObserver.worker_support8484149✕84149✕
http.headers.Reporting-Endpoints969613016.49613016.4