Cookie Tools
Cookie Tools
Parse HTTP Cookie request headers and Set-Cookie response headers into name/value pairs with URL-decoded values and all attributes (Path, Domain, Expires, SameSite, HttpOnly, Secure); build a Set-Cookie header from a form with live preview; or scan pasted HTML/cookies for known trackers (Google Analytics, Meta Pixel, Hotjar, Microsoft Clarity, and more).
Paste a Cookie or Set-Cookie header to parse it
Parse Cookie and Set-Cookie headers, inspect attributes and decoded values, or build a new Set-Cookie header.
Cookie Tools
Parse HTTP Cookie request headers and Set-Cookie response headers into name/value pairs with URL-decoded values and all attributes (Path, Domain, Expires, SameSite, HttpOnly, Secure); build a Set-Cookie header from a form with live preview; or scan pasted HTML/cookies for known trackers (Google Analytics, Meta Pixel, Hotjar, Microsoft Clarity, and more).
Common uses
- Parse a Set-Cookie response header
- Inspect the SameSite and Secure flags
- Build a secure HttpOnly session cookie
- Check if a page uses Google Analytics or Meta Pixel
- Scan this page for known trackers
Also searched as
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- decode url encoded cookie value
Frequently asked questions
How do I parse a Set-Cookie header?
Paste it into the Parse tab to get the name, URL-decoded value and attributes such as Path, Domain, Expires, SameSite, HttpOnly and Secure.
How do SameSite settings affect my cookie?
The SameSite Simulator tab lets you explore how Lax, Strict and None behave. Remember that SameSite=None cookies must also be Secure.
Can I build a Set-Cookie header?
Yes, the Build tab generates one from a form with a live preview.
Can it detect tracking scripts?
The Tracker Scan tab checks pasted HTML or cookies for known trackers such as Google Analytics, Meta Pixel, Hotjar and Microsoft Clarity.
Is my data uploaded to a server?
No. This tool runs entirely in your browser — your input is processed locally on your device and is never uploaded or stored on a server.