HTTP Header Parser
TextPaste raw HTTP headers and turn them into clean tables and JSON for faster debugging.
Total Headers: 0
Unique Names: 0
Duplicates: 0
Parsed Headers
Parsed headers will appear here.
How it works
Start line: Captures the request or response line before header fields.
Header parsing: Splits each line on the first colon and trims values if requested.
Duplicate handling: Optionally combines repeated headers into a single value.
Private: Everything runs locally in your browser, with no uploads.
Common use cases
- Debugging API requests and responses
- Auditing cache, CORS, or security headers
- Converting raw headers into JSON for docs
- Cleaning headers copied from browser devtools
