HAR File Viewer
Reads a HAR (HTTP Archive) network capture — exported from your browser’s DevTools — and shows every request with its status, timing, and headers.
Drop a .har file here, or click to choose one
Works entirely offline in your browser. Nothing is uploaded.
When you'd use this
- Reviewing a browser's network activity export while debugging a slow page
- Checking request/response headers and timing from a support ticket's HAR file
- Investigating a failed API call captured in a HAR export
Authorization, Cookie, Set-Cookie and similar headers are redacted by default since HAR exports often contain real session data — use the "Show sensitive headers" button to reveal them if you need to.