HTTP Header Parser

Parse pasted request or response headers and group security, caching, content, and CORS fields.

Runs locally in your browser

Paste-only tool: this page intentionally does not fetch URLs or inspect remote servers.

Raw headers

Header	Value	Category
Content-Type	application/json; charset=utf-8	content
Cache-Control	private, max-age=0	caching
Strict-Transport-Security	max-age=31536000; includeSubDomains	security
X-Content-Type-Options	nosniff	security

Parsed headers

[ { "name": "Content-Type", "value": "application/json; charset=utf-8", "category": "content" }, { "name": "Cache-Control", "value": "private, max-age=0", "category": "caching" }, { "name": "Strict-Transport-Security", "value": "max-age=31536000; includeSubDomains", "category": "security" }, { "name": "X-Content-Type-Options", "value": "nosniff", "category": "security" } ]

Complete tool guide

HTTP Header Parser guide

The header parser examines raw header text already available to you; it does not contact the remote server.

Your input is processed in the current browser tab and is not sent to the application server.

Why use this tool?

Inspect or transform developer data without installing another utility.
Copy a clean result directly into code, a terminal, an API client, or documentation.
Keep routine developer work in one fast, consistent interface.

Common use cases

Reviewing copied browser or curl output
Documenting API response behavior
Finding caching and security directives

How to use it

1
Copy raw headers from a trusted source.
2
Paste them in Name: Value form.
3
Review the parsed categories.
4
Copy the JSON representation.

Local processing

The operation is performed in this browser tab and does not require a network request.

Exact input

Whitespace, capitalization, selected modes, and character encoding may affect the result.

Practical tips for better results

Check the selected mode before copying the result.
Test the result in the system where it will be used.

Frequently asked questions

Does the HTTP Header Parser upload my data?

No. The transformation runs locally in your browser. Avoid pasting secrets into any tool you do not control, and clear the fields when using a shared device.

Can I use the result in production?

You can copy or download the result, but review it in the context of your application and run the project-specific tests or validation required by your workflow.

Keep working

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