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Cookie Header Parser

Parse pasted Cookie, document.cookie, or Set-Cookie text into names, values, and available attributes, then export normalized representations.

What is Cookie Header Parser?

Parse pasted Cookie, document.cookie, or Set-Cookie text into names, values, and available attributes, then export normalized representations. Cookie header text, document.cookie output, or one or more Set-Cookie lines. Parsed name/value pairs and attributes such as Domain, Path, Expires, Max-Age, Secure, HttpOnly, and SameSite when present; raw values are retained beside URL-decoded values.

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What the tool does

  • Input: Cookie header text, document.cookie output, or one or more Set-Cookie lines.
  • Controls and processing: Export as JavaScript object, JSON, Cookie header, or Set-Cookie-style text; parsing is based only on pasted text.
  • Output: Parsed name/value pairs and attributes such as Domain, Path, Expires, Max-Age, Secure, HttpOnly, and SameSite when present; raw values are retained beside URL-decoded values.

How to use it

  1. Provide the input. Cookie header text, document.cookie output, or one or more Set-Cookie lines.
  2. Review the settings. Export as JavaScript object, JSON, Cookie header, or Set-Cookie-style text; parsing is based only on pasted text.
  3. Generate, inspect, and export. Parsed name/value pairs and attributes such as Domain, Path, Expires, Max-Age, Secure, HttpOnly, and SameSite when present; raw values are retained beside URL-decoded values.

Key features

  • Input: Cookie header text, document.cookie output, or one or more Set-Cookie lines.
  • Controls and processing: Export as JavaScript object, JSON, Cookie header, or Set-Cookie-style text; parsing is based only on pasted text.
  • Output: Parsed name/value pairs and attributes such as Domain, Path, Expires, Max-Age, Secure, HttpOnly, and SameSite when present; raw values are retained beside URL-decoded values.

Useful workflows

  • Parse pasted Cookie, document.cookie, or Set-Cookie text into names, values, and available attributes, then export normalized representations.
  • Use it when you need this deliverable or diagnostic result: Parsed name/value pairs and attributes such as Domain, Path, Expires, Max-Age, Secure, HttpOnly, and SameSite when present; raw values are retained beside URL-decoded values.
  • Place it before the next verified workflow step: validating cookie behavior in browser DevTools and the authorized application.

Limits and safety notes

  • The tool cannot automatically read protected browser cookies. HttpOnly values are not available through document.cookie; multiple Set-Cookie headers have semantics that cannot always be represented by one Cookie header.

Troubleshooting

  • Paste only the raw value or message expected by the tool; preserve quotes, delimiters, escaping, and line endings, then test a minimal valid sample.
  • If parsing succeeds but the meaning is wrong, compare the output with the target standard or runtime; successful parsing is not proof of operational validity.
  • The tool cannot automatically read protected browser cookies. HttpOnly values are not available through document.cookie; multiple Set-Cookie headers have semantics that cannot always be represented by one Cookie header.

Frequently asked questions

What is Cookie Header Parser?

Parse pasted Cookie, document.cookie, or Set-Cookie text into names, values, and available attributes, then export normalized representations.

How do I use Cookie Header Parser?

Provide the expected input, review the page settings, then verify the result before copying or downloading it. Expected output: Parsed name/value pairs and attributes such as Domain, Path, Expires, Max-Age, Secure, HttpOnly, and SameSite when present; raw values are retained beside URL-decoded values.

What input does it accept?

Cookie header text, document.cookie output, or one or more Set-Cookie lines.

What output does it produce?

Parsed name/value pairs and attributes such as Domain, Path, Expires, Max-Age, Secure, HttpOnly, and SameSite when present; raw values are retained beside URL-decoded values.

What are the limits?

The tool cannot automatically read protected browser cookies. HttpOnly values are not available through document.cookie; multiple Set-Cookie headers have semantics that cannot always be represented by one Cookie header.

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Start with a verified input

Test with a small, non-sensitive sample, verify the key settings and output, then apply the result to the real workflow.

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