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Headers Viewer

Online headers viewer for parsing HTTP request and response headers with category filters, search, copy, and JSON export

This tool parses header text locally in your browser and does not upload your input to any server.

Headers Input


Search and Categories

Total Headers

0

Categories

0

Filtered

0


Header Details

0 matched
No matched headers. Parse headers first or adjust your filters.

JSON Output

{}

Common Debug Scenarios

  • Check whether CORS origin, methods, and headers are configured correctly
  • Verify cache headers for static assets and API responses
  • Find gateway or proxy header rewrites that break integrations

Security Notes

  • Mask sensitive fields such as Authorization and Cookie before sharing
  • Filter sensitive headers before copying or exporting
  • Compare staging and production headers before release


Documentation

Overview

Headers Viewer helps you parse HTTP request and response headers, group fields by category, and export results as JSON for API debugging and network troubleshooting.

Key Features

  • Parse pasted header text instantly.
  • Filter by category and search by keyword.
  • Copy one header, copy all headers, or export JSON.
  • Capture current page response headers for quick checks.

Steps

  1. Paste request or response headers into the input box.
  2. Click Parse Headers to generate grouped results.
  3. Use search and category filters to narrow the list.
  4. Copy headers or export JSON when needed.

Notes

  • Mask sensitive fields like Authorization and Cookie before sharing.
  • Compare headers across environments during integration checks.
  • Filter out unrelated headers before exporting.