SpeedCurve

SpeedCurve monitors website performance with both synthetic tests and real user monitoring (RUM). It tracks Lighthouse scores, Core Web Vitals, User Timing and Element Timing, and correlates speed with business metrics such as conversion and bounce rates.

Synthetic tests can also be run against competitors’ sites for comparison. The service identifies the users with the worst experience and the pages to fix, and performance budgets with alerts help detect regressions after a release.

SpeedCurve is a commercial service sold by subscription. It is now part of Embrace.