What does Cookie Parser do?
Parse raw Cookie and Set-Cookie strings into readable key-value pairs and attributes for debugging.
Paste a Cookie header, Set-Cookie header, or curl command and instantly see all cookie attributes in a readable table.
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Parse raw Cookie and Set-Cookie strings into readable key-value pairs and attributes for debugging.
Parse raw Cookie and Set-Cookie strings into readable key-value pairs and attributes for debugging. This browser-based tool runs locally in your browser for quick, copy-friendly output—no signup required. Results update instantly as you change inputs.
Concise answers for common searches — definitions, steps, and comparisons.
Parse raw Cookie and Set-Cookie strings into readable key-value pairs and attributes for debugging.
Cookie Parser runs in your browser for normal use, so inputs are not uploaded to EverydayTools servers.
Paste a raw Cookie or Set-Cookie header.
Run parse to split names, values, and directives.
Inspect attributes such as Path, Domain, Expires, Secure, and SameSite.
Decode escaped segments if values appear malformed.
Copy structured output into bug reports or audit notes.
Common real-world scenarios where this tool saves time.
Web developers
Inspect cookie flags and values when login flows fail.
Security testers
Check Secure, HttpOnly, and SameSite settings during audits.
Support engineers
Convert raw headers into readable structures for faster triage.
How HTTP Cookie Parser — Parse, Decode & Build Cookie Strings compares to manual and integrated workflows.
| Method | Best for | Trade-off |
|---|---|---|
| HTTP Cookie Parser — Parse, Decode & Build Cookie Strings | Fast browser workflow with instant, copy-ready results | Validate outputs in production when stakes are high |
| Manual editing or calculation | Single quick checks without opening a tool | Slower and easier to mistype at scale |
| IDE or desktop tooling | Deep integration in a dev environment | Heavier setup than a lightweight web tool |
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Cookie is sent by browser to server; Set-Cookie is sent by server to browser.
Yes, encoded values can be interpreted to reveal original characters.
They reduce cross-site attack surface and improve safer cookie behavior.
No. Compliance depends on legal context, consent flow, and jurisdiction rules.
Strict blocks the cookie on all cross-site requests. Lax sends it on top-level navigations but not cross-site AJAX. None requires Secure.
A Cookie header contains semicolon-separated name=value pairs. Paste the full header and the parser splits each cookie into its own row.
Yes—paste a full curl command with -H 'Cookie: ...' or -H 'Set-Cookie: ...' flags and the parser extracts the header value.
HttpOnly cookies are invisible to JavaScript. Check the Set-Cookie response header in DevTools Network tab instead.
No. Parsing runs entirely in your browser; cookie headers are never sent to EverydayTools servers.
Cookie Parser keeps typical inputs on your device for standard browser-based processing.
Parsed cookie output is informational and does not validate legal compliance, consent requirements, or security posture by itself.
Part of Developer Tools
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Reviewed by EverydayTools Editorial Team on 2026-06-09.
This cookie parser online parses HTTP cookie strings and displays cookie names, values, and attributes (Secure, HttpOnly, SameSite, Domain, Path, Expires, Max-Age). Paste a Cookie or Set-Cookie header and view the result instantly. You can also build Set-Cookie strings.
Input:
sessionId=abc123; Secure; HttpOnly; SameSite=Lax
Output (parsed):
{
sessionId: "abc123",
Secure: true,
HttpOnly: true,
SameSite: "Lax"
}The Cookie Parser helps web developers work with HTTP cookies and Set-Cookie headers. It parses both browser cookie strings (multiple name=value pairs) and Set-Cookie header format (one cookie with Path, Domain, Expires, Secure, HttpOnly, SameSite, etc.), decodes values, and lets you build valid Set-Cookie strings. All processing runs in your browser—no server, no storage.
Paste your cookie string into the input box. The tool auto-detects the format:
sessionId=abc123; theme=dark; csrftoken=xyz. Each name=value pair is one cookie.sessionId=abc123; Path=/; Secure; HttpOnly; SameSite=Lax. The first pair is the cookie name and value; the rest are attributes (Path, Domain, Expires, Max-Age, Secure, HttpOnly, SameSite).Values are URL-decoded automatically (e.g. user=John%20Doe → John Doe). If a value is valid JSON, a “Show JSON” preview is available.
.example.com)./ or /api).Multiple cookies (browser format):
sessionId=abc123; theme=dark; csrftoken=xyz
Single Set-Cookie header:
sessionId=abc123; Path=/; Max-Age=3600; Secure; HttpOnly; SameSite=Lax
Set-Cookie is an HTTP response header sent by the server to create or update a cookie in the browser. It contains the cookie name and value plus optional attributes (Path, Domain, Expires, Max-Age, Secure, HttpOnly, SameSite). The browser stores the cookie and sends it back with future requests that match the Domain and Path. This tool parses Set-Cookie strings and can generate them for use in your backend or API responses.
Developers use this cookie parser to inspect cookies from the Application tab (Chrome) or Storage tab (Firefox), or from the Cookie request/response headers in the Network panel. Paste the cookie string or a Set-Cookie header, then use the statistics panel to see counts (Secure, HttpOnly, SameSite), search and sort the table, and copy individual Set-Cookie headers for replay or debugging. Validation warnings highlight common issues like SameSite=None without Secure or invalid Expires format.
Browser cookie string (e.g. from document.cookie or dev tools) contains multiple cookies as name=value; name2=value2. There are no attributes like Path or Domain—those are stored by the browser separately. Set-Cookie header is what the server sends in an HTTP response: one cookie per header, with optional attributes (Path=, Domain=, Expires=, Max-Age=, Secure, HttpOnly, SameSite=). This tool detects the format automatically and parses accordingly.
This cookie parser supports multiple input formats. Paste any of the following and the tool will detect the format and parse the cookies automatically.
-H "Cookie: ..." or -H 'Cookie: ...'; the tool extracts the cookie value from the command.Examples: