Web

Cookie Parser & Builder

Decode messy Cookie headers and build safer Set-Cookie strings for backend responses. Useful for auth debugging, proxy work and browser session analysis.

Cookie
cookies.json4 cookies
runtime

Browser-local execution

Inputs stay inside the current tab unless you copy, download or explicitly export.

memory

Session handoff

Magic Paste can pass input to a target tool through sessionStorage, never through the URL.

control

User-owned state

Favorites, recent tools and workflow history are local browser data you can clear from the browser.

smart handoff graph

Suggested next moves

session handoff ready
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01

How to use

  1. 01Paste a Cookie header in Parse mode to inspect key/value pairs.
  2. 02Switch to Build mode to compose a Set-Cookie header.
  3. 03Copy the JSON or header output.
02

FAQ

Why include HttpOnly by default?
Most session cookies should be HttpOnly so browser JavaScript cannot read them. It is a safer default for auth cookies.
Does this read my browser cookies?
No. You paste headers manually; the tool does not access document.cookie.
03

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