JWT Builder & Debugger
Build, sign, decode and verify JSON Web Tokens with HS256
Build
Decode
🔧 Header
alg
HS256
typ
JWT
📦 Payload
iss (Issuer)
sub (Subject)
aud (Audience)
exp (Expires)
iat (Issued At)
nbf (Not Before)
jti (JWT ID)
Custom Claims
+ Add Claim
🔑 Secret
HMAC Secret
Used to sign the token with HS256
Build Token
🚀 Encoded Token
—
Copy Token
Decoded Header
—
Copy
Decoded Payload
—
Copy
⏰ Expiry Status
🔍 Paste JWT
Decode & Verify
Header
—
Copy
Payload
—
Copy
🔑 Verify Signature
HMAC Secret (optional — leave empty to skip verification)
—
⏰ Expiry Check
Timestamps
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