sessionId
#1- Value
- abc123
- path
- /
- secure
- Enabled
- httponly
- Enabled
- samesite
- Lax
Network & Web Tools
HTTP Cookie Parser Online Free
Parse Cookie and Set-Cookie header values, inspect attributes and identify common cookie configuration issues.
Parse cookie headers
Paste one Cookie or Set-Cookie value per line. Everything is parsed locally.
Cookies
2
Warnings
0
Mode
Browser only
preferences
#2- Value
- theme%3Ddark%26lang%3Den
- max-age
- 3600
- priority
- High
About this tool
HTTP cookies carry state between browsers and web applications. This parser turns raw header values into readable name, value and attribute records without sending sensitive cookie text anywhere.
Common use cases
- ✓ Inspect Set-Cookie responses during development.
- ✓ Review Secure, HttpOnly and SameSite attributes.
- ✓ Convert cookie header text into JSON for debugging.
- ✓ Check expiration and Max-Age formatting.
How to use it
- Paste one cookie header value per line.
- Review parsed names, values and attributes.
- Read warnings for conflicting or malformed attributes.
- Copy the structured JSON when needed.
Important interpretation notes
- • Never paste live authentication cookies into untrusted websites.
- • Cookie support and enforcement vary by browser version.
- • A parser cannot determine whether server-side session handling is secure.
Related Network & Web Tools
Frequently asked questions
Does this tool send cookies to a server?
No. Cookie text is parsed locally in your browser.
What is the difference between Cookie and Set-Cookie?
Cookie is normally sent by a browser to a server, while Set-Cookie is returned by a server to create or update a browser cookie.
Why should SameSite=None use Secure?
Modern browsers generally require cookies using SameSite=None to also use Secure so they are sent only over HTTPS.
Can this tool validate application security?
It identifies common formatting and attribute issues, but it is not a complete application security review.