Cookie Parser

Parse Set-Cookie headers and document.cookie strings into structured data. All processing is done in your browser for maximum security and privacy.

Multiple Formats Security Flags Cookie Statistics

How to Use Cookie Parser

1

Choose Mode

Select Set-Cookie header mode for HTTP headers or document.cookie mode for browser cookie strings

2

Paste Data

Paste your Set-Cookie headers (one per line) or a document.cookie string into the input field

3

Inspect Results

View parsed cookies in a structured table with statistics on security flags

What are HTTP Cookies?

HTTP cookies are small pieces of data stored by the browser on behalf of websites. They are sent via the Set-Cookie HTTP response header and attached to subsequent requests via the Cookie header. Cookies are used for session management, personalization, and tracking. Security flags like HttpOnly, Secure, and SameSite help protect cookies from cross-site scripting (XSS) and cross-site request forgery (CSRF) attacks.

HttpOnly

Prevents client-side scripts from accessing the cookie, mitigating XSS attacks

Secure

Ensures the cookie is only sent over HTTPS connections

SameSite

Controls cross-site cookie sending: Strict, Lax, or None to prevent CSRF attacks

Frequently Asked Questions

What cookie formats are supported?

The tool parses Set-Cookie HTTP headers and document.cookie JavaScript strings. Multiple cookies can be parsed at once.

Does it show security flags?

Yes. HttpOnly, Secure, SameSite (Strict/Lax/None), Path, and Domain attributes are all displayed for each cookie.

Can I parse multiple cookies at once?

Yes. In Set-Cookie mode, paste one header per line. In document.cookie mode, all cookies in the string are parsed.