psi-swarm
Lighthouse, run many times across realistic presets. The shape of your perf, not one noisy point.
Local-first performance lab
One Lighthouse run is a clue. A swarm shows the shape.
Run the same page across realistic desktop and mobile presets, compare the distribution, then inspect the slowest measured case. The browser connects to your local PSI Swarm agent; no remote account is required.
- p50
- 1.62 s
- p75
- 1.80 s
- p90
- 2.04 s
- p99
- 2.16 s
Example values only. A real swarm adds min, max, σ, LCP phases, opportunities, and before/after history from your own machine.
Live product
Start the local agent, then connect below.
Looking for a local psi-swarm agent…