A free online JWT (JSON Web Token) decoder. Paste any JWT to instantly view its decoded header and payload as formatted JSON with syntax highlighting. Check expiration status, issuer, and claims. Note: this tool decodes but does NOT verify signatures.
Paste your JWT token into the input field.
The header and payload are decoded instantly.
Review claims, expiration status, and issuer.
Copy any decoded section as needed.
No. This tool only decodes the header and payload. It does not verify the cryptographic signature. Never trust decoded JWT claims without proper server-side signature verification.
It highlights standard claims: iss (issuer), sub (subject), aud (audience), exp (expiration), nbf (not before), and iat (issued at), along with any custom claims in the payload.
Free online tool — works in your browser, no sign-up required. Start using it right now.
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