HAR File Viewer
Upload a .har export from DevTools, or paste its JSON directly. Every request in the log gets a
row (method, URL, status, size, time). Click a row to inspect its full headers and body.
About This Tool
A HAR (HTTP Archive) file is the JSON export DevTools Network tab produces: one entry per request, carrying method, URL, status, timing, and full headers. This viewer parses that structure defensively (a HAR captured mid-load or trimmed by hand is still readable) and lays it out as a clear table.
Parsing happens entirely in your browser via JSON.parse: a HAR capture can contain sensitive cookies, auth headers, and full response bodies, so nothing in it is ever sent to a server. To turn the same file into an OpenAPI skeleton or a Markdown summary, see HAR to OpenAPI and HAR to Markdown.
Key Features
- Upload or Paste: Drop a .har file, use the Upload button, or paste raw JSON directly.
- Color-Coded Status: 2xx green, 3xx blue, 4xx/5xx red at an immediate glance.
- Click-to-Expand Rows: Inspect full request and response headers plus raw or JSON formatted bodies.
- Resilient Parsing: Captures missing optional fields (no content or headers array) still render smoothly.
- Size and Timing Metrics: Spot slow latency or oversized network calls immediately.
