Your files stay on your device

# Set-Cookie analyzer

Set-Cookie breakdown: attributes, expiry dates, prefix rules, warnings.
ClearSet-Cookie headers

Domain/Path, Secure, HttpOnly, SameSite, Max-Age/Expires with absolute dates, size, __Secure-/__Host- prefix rules: all against pasted headers, no requests.
Paste, drop, or type to begin. Everything stays on this device.

## More web & auth tools

- [HTTP header parser](/web/headers)
- [JWT decoder](/web/jwt)
[All web & auth tools](/web)

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Canonical HTML: https://nutter.tools/web/cookie/
Markdown version: https://nutter.tools/web/cookie/index.md
Plain-text version: https://nutter.tools/web/cookie/index.txt
Agent index: https://nutter.tools/llms.txt