💻 JWT Decoder
Decode JSON Web Tokens (JWT) without a server — inspect header and payload. It runs entirely in your browser — no signup, no installation, and nothing you paste or drop leaves your device.
JWT Decoder — Free Online Tool
Free online JWT decoder tool. Decode JSON Web Tokens directly in your browser — inspect the header and payload without sending data to any server. Essential for developers debugging authentication and API tokens.
JWT Decoder — Kostenloses Online-Tool
Kostenloses Online-JWT-Decoder-Tool. Dekodiere JSON Web Tokens direkt im Browser — inspiziere Header und Payload ohne Daten an einen Server zu senden. Für Entwickler beim Debuggen von Authentifizierung und API-Tokens.
What is JWT Decoder?
JWT Decoder is a free online developer tool built for developers debugging payloads, configs and code. Decode JSON Web Tokens (JWT) without a server — inspect header and payload In practice you paste the JSON Web Token, read the decoded header and payload, and then check the claims such as expiry and issuer.
Your code, tokens and payloads never leave the browser, which matters when you are debugging something under NDA or handling production data.
How to use JWT Decoder
- Paste the JSON Web Token.
- Read the decoded header and payload.
- Check the claims such as expiry and issuer.
JWT Decoder FAQ
Is JWT Decoder free to use?
Yes. JWT Decoder is completely free and needs no account, no trial and no payment details. Every feature on the page is available without limits.
Is my data uploaded anywhere?
No. JWT Decoder runs entirely in your browser, so the text, file or number you enter never leaves your device.
Does JWT Decoder work on a phone or tablet?
Yes. It works in any modern browser on desktop, tablet and phone. There is no app to install and no account to create.
How do I use JWT Decoder?
Paste the JSON Web Token. Read the decoded header and payload. Check the claims such as expiry and issuer.