JWT Decoder – Free Online JSON Web Token Decoder

✓ Free JWT Token Decoder & Verifier Online

Decode and inspect JWT tokens instantly. View header, payload, and signature. Shows expiration time and claims. No verification (demo only).

🔓 Instant Decode — Paste any JWT and see its contents decoded immediately. No clicking needed.
📋 Three Parts Displayed — Header and Payload shown in formatted JSON with syntax highlighting. Signature shown separately.
⏰ Expiration Check — Automatically parses iat, exp, and nbf claims. Shows if the token is expired or not yet valid.
🔒 Privacy First — All decoding is local in your browser. Your JWT is never sent to any server.

Full guide, how-to & FAQ →

⚠️ JavaScript is required This tool runs entirely in your browser and needs JavaScript. Please enable JavaScript, or open this page in a modern browser with JavaScript support, to use all features.

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