Report analyzer

Open a recording to chart memory, CPU, DOM and Core Web Vitals over time and read its leak verdict.

Choose a file or drag it here

perf-report-*.json, saved when you press Stop in the extension

Browse

Load a sample report → Runs locally, nothing is uploaded

Summary

JS heap, RSS & resident memory over time

Tab CPU usage and main-thread busy time

Node counts and JS event listeners

Worst interaction, long animation frames & loop lag (ms)