JWT Decoder

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Paste a JWT and instantly see its decoded header, payload, and signature. Check expiration and claims.

Frequently Asked Questions

What is JWT Decoder?▼

Paste a JWT and instantly see its decoded header, payload, and signature. Check expiration and claims.

Is this tool free?▼

Yes, JWT Decoder is completely free. No sign-up, no limits.

Is my data safe?▼

100% safe. This tool runs entirely in your browser. No data is ever sent to any server.

How does JWT Decoder work?▼

JWT Decoder uses modern browser APIs to process everything locally. Nothing is uploaded or stored.