# Real-user Core Web Vitals

> Measure LCP, INP, CLS, FCP and TTFB in your visitors' browsers with a script the edge adds, without storing IP addresses.

OpenWAF can now measure Core Web Vitals in your visitors' browsers: LCP, INP, CLS, FCP and TTFB, with a script the edge adds to your pages and without storing IP addresses. It is off by default and is switched on per domain with a sample rate. The dashboard's **Real performance** page shows the p75 of each metric with its rating, and the MCP tool `rum_report` reads the same data.

See the [Analytics documentation](https://developers.openwaf.dev/analytics/).