Building blocks
Collection modes
Presets (Light, Standard, Full) that decide how much detail the tracker collects.
Not every site needs the same depth. Light keeps data to the essentials, Standard is the balanced default, and Full unlocks the richest diagnostics like detailed attribution and resource timing.
The mode is a deliberate lever over the privacy and data trade-off, chosen by you rather than assumed, and it maps directly to what a visitor's device is asked for.
Related terms
- BeaconThe small data packet the tracker sends to fastmon with a visit's measurements.
- TrackerThe lightweight script you embed once; it measures Core Web Vitals and errors directly in the browser.
- Stitchfastmon's short-lived, edge-derived identifier that groups a visit without cookies or cross-site tracking.
- SessionOne continuous visit: the sequence of page views and interactions a visitor makes before going idle.
- PageviewA single page load or, in a single-page app, a route change counted as its own view.
- Server-TimingAn HTTP header your backend can send to break down where server time was spent, visible in RUM.
- Cache-StatusWhether a response came from a CDN edge, the origin server or the browser cache.
Monitoring that
belongs in the EU.
Read-only by default: no cookies*, no long-lived identifiers, no US provider in the data path. Live in about five minutes.
fastmon One
€99/month
1M pageviews included.
More volume, longer retention or a contract of your own? Enterprise on request. See all plans