Accepted input

Accepts .har files or JSON HAR exports containing a top-level log.entries array. Mid-sized captures parse reliably in-browser, and you can filter or sort the results without re-uploading.

How to use

1. Export a HAR file from browser DevTools or click Load sample to explore a prebuilt capture.
2. Upload the file, then review summary cards for slow requests, failures, and overall timing.
3. Filter by domain, status bucket, or latency threshold to isolate hotspots.
4. Export the summary JSON when you want to share findings with teammates.

Tips

• Sort by response size to spot oversized endpoints before they affect production performance.
• Use the failed-request filter first when debugging flaky third-party calls.