Developer Tool
JWT Debugger
Decode and inspect JWT tokens — header, payload claims, expiry, and signature info.
Token Input Valid JWT structure
ValidExpires in 95186d
Header
algHS256
typJWT
Payload
Subjectusr_123456
nameHelmi Fauzi
roleadmin
Issued At11/14/2023, 10:13:20 PM
Expires At11/20/2286, 5:46:39 PM
Signature
SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c
Signature verification requires the secret key — this tool only decodes structure.
How it works
01
Paste Token
Drop any JWT token into the input area on the left.
02
Auto Decode
Header and payload are instantly decoded from Base64URL.
03
Inspect Claims
Review iss, sub, exp, iat and all custom claims at a glance.
Security Note
Everything runs client-side. Your token never leaves the browser.
Instant Decode
Header and payload decoded in real-time as you type.
Human-Readable Dates
exp, iat, nbf timestamps converted to readable format.
Expiry Detection
Instantly know if your token is expired or not yet valid.