HTTP Cookie Parser & Decoder
Parse and decode cookie strings from browser headers into JSON
How to Get Cookie Strings
From Browser DevTools:
- Open DevTools (F12) and go to Network tab
- Click on any request
- In the Headers section, find "Cookie" (request) or "Set-Cookie" (response)
- Copy the cookie string value
- Paste it here to parse
Request Cookie format:
name1=value1; name2=value2; name3=value3
Set-Cookie format (with attributes):
sessionid=abc123; expires=Wed, 09 Jun 2025 10:18:14 GMT; path=/; Secure; HttpOnly
About the Cookie String Parser & Decoder
Parse and decode HTTP cookie strings from browser DevTools or request headers into readable JSON format. Essential for debugging authentication, session management, and cookie-based functionality.
Features:
- Parse Cookie and Set-Cookie headers
- Automatic URL decoding of cookie values
- Extract cookie attributes (expires, path, domain, etc.)
- Support for multiple cookie formats
- Pretty-printed JSON output
- Copy individual cookies or full JSON
Supported Formats:
- Request Cookie header: name1=value1; name2=value2
- Set-Cookie response headers (with attributes)
- URL-encoded cookie values
- JSON stringified values in cookies
- Multiple cookies separated by semicolons
Use Cases:
- Debugging authentication issues
- Analyzing session cookies
- Testing cookie-based features
- Security auditing (HttpOnly, Secure flags)
- Cookie lifetime and expiration analysis
- API development and testing
- Learning about HTTP cookies