Cookie Editor
Online Cookie editor for parsing, editing attributes, and generating Cookie header or JSON output for API debugging, browser troubleshooting, and test prep.
Cookie String
Paste multi-line Set-Cookie values, one cookie per line with attributes.
Parsed Cookies
Generated Output
Only cookies with non-empty names are exported.
Cookie Editor Documentation
What this tool does
Cookie Editor converts raw cookie strings into editable fields, then exports them as request header lines or JSON for API debugging, packet replay, and automation setup.
Workflow
- Paste cookies from browser devtools or captured traffic, one line per cookie.
- Click "Parse Cookies" and edit each name, value, and attribute in the list.
- Switch output format between header and JSON, then copy the result.
Common attribute notes
- Domain decides where the cookie is sent, usually a main domain or subdomain.
- Path narrows the URL scope to avoid sending cookies on unrelated requests.
- Secure should be enabled in production so cookies travel only on HTTPS.
- HttpOnly prevents frontend scripts from reading cookie values.
- SameSite Lax/Strict/None defines cross-site cookie behavior.
Cookie Attribute Quick Reference
Domain
Defines which domain can receive this cookie.
Path
Restricts cookie sending to specific URL paths.
Secure
Sends the cookie only over HTTPS connections.
HttpOnly
Blocks JavaScript access to reduce XSS leakage risk.
SameSite
Controls cross-site cookie sending to mitigate CSRF.
Max-Age/Expires
Sets cookie lifetime or explicit expiration time.
Debugging tips
- For cross-site auth flows, verify SameSite=None and Secure are both set.
- If you get 401 responses, check whether Domain and Path match the request URL.
- JSON export is useful for script injection and avoids manual header mistakes.
FAQ
Why are some lines not parsed?
A valid line must follow the "name=value" pattern with a non-empty name.
When should I use header format vs JSON format?
Use header format for direct HTTP requests, and JSON format for scripts or config files.
Does this tool store or upload my cookies?
No. All parsing and editing stay in the current browser session only.