About this tool
Parse Cookie header strings into key-value pairs. Turn opaque strings from network traces, devtools, or SEO audits into structured output you can act on.
Paste a Cookie header value (name=value pairs separated by semicolons). Parse into a clear key/value map for debugging session and preference cookies. Example — Browser Cookie header: try `session=abc123; theme=dark` and expect something like `{ "session": "abc123", "theme": "dark" }`.
Parses Cookie request headers, not full Set-Cookie response attribute lists (Path, HttpOnly, SameSite). See also: HTTP Header Parser. Runs in your browser — nothing you paste gets uploaded.
How to use
- Paste a Cookie header value (name=value pairs separated by semicolons).
- Parse into a clear key/value map for debugging session and preference cookies.
- Spot missing, overwritten, or unexpected cookie names quickly.
- Combine with the HTTP Header Parser when starting from a full request dump.
Example
Browser Cookie header
Input
session=abc123; theme=dark
Output
{
"session": "abc123",
"theme": "dark"
}Limitations
- Parses Cookie request headers, not full Set-Cookie response attribute lists (Path, HttpOnly, SameSite).
- Does not decrypt signed or encrypted cookie payloads.
- URL-encoded values are left as-is unless you decode them separately.
Related guides
1Related tools
1Frequently asked questions
What does the Cookie Parser do?
Parse Cookie header strings into key-value pairs. Runs in your browser — no install, no account.
How do I use the Cookie Parser?
Paste a Cookie header value (name=value pairs separated by semicolons). Parse into a clear key/value map for debugging session and preference cookies. Spot missing, overwritten, or unexpected cookie names quickly. Combine with the HTTP Header Parser when starting from a full request dump.
Is the Cookie Parser free?
Yes. No signup, no usage limits, no paywall.
Does the Cookie Parser upload my data?
No. Processing happens locally in JavaScript. Your input is not uploaded, stored, or logged.
What are the limitations of the Cookie Parser?
Parses Cookie request headers, not full Set-Cookie response attribute lists (Path, HttpOnly, SameSite). Does not decrypt signed or encrypted cookie payloads. URL-encoded values are left as-is unless you decode them separately.