Pulsetic RUM

Pulsetic RUM is the real-user monitoring feature of Pulsetic, an uptime-monitoring service. Instead of inferring page speed from a synthetic check run from a datacentre, it collects measurements from the browsers of people actually visiting the site.

What Pulsetic RUM does

• Core Web Vitals: records LCP, CLS, INP and FCP from real visitors.
• Network timings: DNS, connection, first-byte and full load durations for every tracked page view.
• Error capture: logs uncaught JavaScript exceptions and failed fetch and XHR requests.
• Single script: set up by adding one asynchronous script to the site.

Customers and markets

Small teams that already use Pulsetic for uptime checks and want field data alongside it.

Key facts

• Company: Designmodo Inc., New York
• Privacy: uses no cookies and stores nothing on the visitor's device
• Limit: shows that a visitor was slow, not why, which is where full tracing tools begin