HAR File Analyzer
Inspect a .har file — requests, status, sizes, slowest hits and MIME breakdown — without uploading. HAR files contain cookies and auth headers, so privacy matters.
- Runs in your browser
- No upload on server
- Free, forever
- Paste input
- Run
- Copy result
Drop a HAR file to see a request waterfall, slowest hits and a size breakdown — all privately.
How this works — and why it's private
- The file is read with the browser's File API and parsed locally. Cookies, auth headers and request bodies inside the HAR never leave your device.
- Sort by time to find slow requests, by size to find heavy assets, or filter by host to scope a third-party domain.
- Large HARs (10k+ requests) are summarised — the table shows the first 500 matches so the page stays responsive.
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