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JWT Debugger & Decoder
Decode and inspect JWT tokens instantly. View header, payload, check expiry — all processed locally in your browser.
JWT Debugger & Decoder
Decode and inspect JWT tokens instantly. View header, payload, and check token expiry — all client-side.
🔒 Your token never leaves your browser
📥 Paste JWT Token
No token decoded yet
Paste a JWT token above to decode it instantly
Features & Benefits
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Instant Decode
Auto-decode as you paste — no button click needed.
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Expiry Check
See if your token is expired with live countdown.
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100% Client-Side
Your token never leaves your browser. Zero server requests.
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Copy Sections
Copy header, payload, or signature independently.
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Formatted Output
Pretty-printed JSON for easy reading and debugging.
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Mobile Friendly
Works perfectly on desktop, tablet, and mobile devices.