HAR Viewer Online

Analyze HAR network logs locally to find failed requests, slow responses, large payloads, and debugging clues.

Aruvix HAR Viewer helps QA and debugging teams inspect browser network logs locally without uploading HAR files to a server.

HAR viewer workspace The interactive tool loads here immediately.

What is HAR Viewer

A HAR (HTTP Archive) viewer parses and displays browser network request logs exported from Chrome DevTools or other tools. It surfaces failed requests, slow responses, largest payloads, and status code summaries for debugging API issues.

Why use HAR Viewer

Use it when QA or developers collect a browser HAR file during a bug or performance issue and need to quickly identify which requests failed, which were slow, or which payloads were unusually large.

Features

  • Parse and analyze HAR files locally
  • View all requests with status, timing, and size
  • Filter by failed (4xx/5xx) or slow requests
  • Summary stats: total, failed, slow, largest
  • No HAR content uploaded to any server

How to use

  1. Click Upload HAR or load the sample.
  2. Review the request table with status and timing.
  3. Use filters to isolate failed or slow requests.
  4. Copy the summary for a bug report.

FAQ

Does the HAR file get uploaded anywhere?

No. HAR files are parsed entirely in your browser. No content is sent to a server.

What counts as a slow request?

By default, any request taking over 1000ms is flagged as slow. Adjust the threshold in Settings.

Can I use this for debugging API issues?

Yes. HAR Viewer helps identify failed API calls, slow endpoints, and large response payloads from a browser session.