HAR Viewer

Inspect HTTP Archive (HAR) exports from browser DevTools — request timeline, status codes, and sizes, fully local.

100% In-Browser & Private — your data never leaves this device
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How to use the HAR Viewer

  1. Export a HAR from Chrome or Firefox DevTools (Network → Save all as HAR).
  2. Drop the file or paste the JSON.
  3. Review the request table and formatted HAR output.
  4. Copy or download — nothing is uploaded.

FAQ

What is a HAR file?
HTTP Archive format — a JSON log of network requests, headers, timings, and response metadata.

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