Right-click in the Network panel → Save all as HAR with content
Drag & drop the HAR file into the box above
Are my HAR data stored when using the tool?
No. No data are stored externally or transmitted.
The HAR processing happens entirely client-side in the browser:
No server upload – There are no fetch() or POST requests to external servers.
IndexedDB only temporarily – HAR data are stored in IndexedDB only briefly to transfer them
between pages and are automatically deleted after a single use.
Pure JavaScript analysis – Parsing and analysis are performed entirely within the user's
browser.
The HAR file therefore never leaves your local machine.