JWT Decoder

Decode and inspect JSON Web Tokens. View header, payload, and signature. Detects expiry and maps all registered JWT claims.

How to Use

1Open JWT Decoder above. No signup or installation needed.
2Type or paste your input. Everything runs locally in your browser — nothing leaves your device.
3See results instantly. Hit Copy to grab the output.
4Star the tool to save it to Favorites for quick access next time.

Is JWT Decoder free?

Yes, completely free. No sign-up, no credit card, no usage limits.

Do you store my data?

Never. Everything runs 100% in your browser. Nothing is uploaded to any server.

Does it work on mobile?

Yes. All tools are fully responsive and work on phones, tablets, and desktops.