Developer Utilities

HTTP Headers Parser

Parse raw HTTP headers to JSON and build headers from JSON.

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How to Use HTTP Headers Parser

  1. Enter or paste your input in the text area above
  2. The tool will process your input automatically or click the action button
  3. Copy the result using the copy button

Frequently Asked Questions

Can it parse duplicate headers?

Yes. Duplicate header keys are grouped into arrays in the parsed JSON output.

What input format is expected?

Use one header per line in the format "Header-Name: value".

Sources & references

Primary references: RFC 9110: HTTP Semantics.

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