JWT Decoder & Inspector
JWT → JSON
Decode JSON Web Tokens instantly client-side. Inspect claims, header parameters, payload data, and token expiration dates securely.
About this tool
About JWT Decoder & Inspector
JWT Decoder & Inspector is a free, browser-based tool that lets you decode JSON Web Tokens instantly client-side. Inspect claims, header parameters, payload data, and token expiration dates securely. It supports JWT → JSON. Everything runs locally on your device, so your files are never uploaded to a server. There's no sign-up, no watermark, and no limit — just open JWT Decoder & Inspector, add your input, and get results instantly.
How to use JWT Decoder & Inspector
1
Paste JWT Token
Paste your encoded JSON Web Token into the input field.
2
Inspect Claims
View decoded header, payload data, and active/expiration status.
3
Copy JSON
Copy formatted payload or header JSON directly to clipboard.
Key features
Client-Side Privacy
Your JWT tokens are decoded 100% inside your browser memory and never sent to any external server.
Expiration Detection
Automatically parses exp timestamps to check if your token is active or expired.
100% Private
JWT Decoder & Inspector processes your data locally in the browser. Nothing is uploaded, tracked, or stored u2014 your files never leave your device.
Completely Free
Use JWT Decoder & Inspector as much as you want with no fees, no watermarks, and no hidden limits.
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