Cookie Parser

Decode a Cookie or Set-Cookie header into names, values and explained attributes.

Your cookie header

Header type: —

Cookies: —

Security flags: —

—

Values are decoded in the page; the header you paste is never transmitted.

Copy a Cookie or Set-Cookie header from your browser developer tools or a response.
Paste it into the box and press Parse to split names, values and attributes.
Check the expiry countdown and the security flags before you copy the result.

Common questions about the free online cookie parser.

A Cookie header is sent by the browser to the server, while Set-Cookie is sent by the server to store a cookie.

It tells the browser to send that cookie only over HTTPS connections, which helps protect it from interception.

The cookie is hidden from scripts running on the page, which reduces the damage from cross site scripting attacks.

It controls whether the cookie is sent on cross site requests, with Strict, Lax and None as the possible values.

An Expires date or a Max-Age value sets its lifetime, and without either the cookie lasts only for the session.

Percent escapes inside the value are decoded where possible, so you can read the stored text directly.

No. Parsing happens inside the page only, and nothing is uploaded or stored on a server.

Yes, the cookie parser is free and unlimited with no account needed.

Last updated: October 10, 2026