Perf Recorder

Report analyzer & privacy policy

Report analyzer

Drop a perf-report-*.json file below to chart it. Everything runs locally in your browser — nothing is uploaded.

Choose or drop a perf-report-*.json here

Produced by the Perf Recorder extension when you press Stop

▸ Load a sample report to see what it looks like

Summary

Memory

CPU & main-thread

DOM & listeners

Responsiveness (ms)

Leak verdict detail

Privacy policy

Perf Recorder records performance and diagnostic data from the web page you choose to profile — memory and CPU usage, DOM size, network requests and WebSocket frames, console output, and user-experience timing metrics such as INP, CLS and LCP.

What we do with it

All recorded data is processed locally in your browser and saved only to your computer's Downloads folder when you click Stop.
The extension does not transmit any data to the developer or any third party. There are no analytics, no remote servers, and no accounts.
Recording happens only while you actively run it, on the tab you choose. Your settings are stored locally on your device via chrome.storage.local.
This analyzer page also runs entirely in your browser; the file you open never leaves your machine.

Data sold or shared

None. We do not sell or share any data, and we do not use it for anything other than the extension's single purpose (showing you your own performance measurements).

Contact: lakindubannaheka@gmail.com · Last updated: 2026-06-20