v144 · Performance · demo

INP Profiler

Interact with the buttons and input below and watch live INP (Interaction to Next Paint) measurements computed from PerformanceEventTiming. The histogram shows distribution across good / needs improvement / poor latency buckets using Chrome 144's interactionCount.

Checking PerformanceEventTiming + interactionCount support…
INP (p98 latency)
—
no interactions yet
Interactions
0
interactionCount
Max latency
—
worst single interaction
Mean latency
—
average across all
Interaction playground — click buttons or type to generate events
Latency distribution histogram
Good (<200ms)
0
Needs improv.
0
Poor (>500ms)
0

interaction log

# Type Target Duration (ms) Input delay (ms) Processing (ms) Class
No interactions recorded yet. Use the playground above.

see also