HTTP Headers Parser
Parse raw HTTP headers into structured JSON
π 100% client-side β your data never leaves this pageInput
Output
Parsed headers will appear here
π 100% client-side
About this tool
Convert raw HTTP request or response header blocks into structured JSON for faster debugging. The parser extracts first line metadata, common fields such as host and content type, and full header maps. It is ideal for API troubleshooting, gateway logs, and reproducing client-server behavior in dev workflows.
Frequently Asked Questions
Can this parse both requests and responses?
Yes. It detects request lines and response status lines, then normalizes header key-value pairs into one structure.
What happens to duplicate headers?
Current output keeps the latest value for duplicate keys. For advanced multi-value handling, expand parser logic as needed.
Is this useful for API debugging?
Yes. It helps quickly inspect and copy header data when troubleshooting auth, content negotiation, or proxy issues.