Harmonic Mirror is a performance monitoring tool for website owners and developers who need insights based on actual visitor experiences. It moves beyond synthetic testing to show how real users interact with your site, pinpointing the exact issues that affect load times and responsiveness.

• Real User Monitoring (RUM): Captures performance metrics like Largest Contentful Paint (LCP) and First Input Delay (FID) directly from your site's visitors, providing a true picture of user experience.
• Visual Performance Timeline: See a waterfall chart of resource loading for any recorded page view, making it easy to identify slow-loading scripts, images, or third-party requests.
• Session Recording: Replay individual user sessions to observe performance issues in context, understanding how delays affect interaction and navigation.
• Custom Metric Alerts: Set up notifications for when key performance indicators degrade beyond your defined thresholds, allowing for proactive maintenance.
• Geo-based Performance Data: Analyze how your site's speed varies for visitors in different geographical locations, which is crucial for global audiences.