Livesecurityshipped v1.0.0
JWT Decoder
A complete JWT toolkit. Decode tokens with live preview and color-coded visualization. Verify HMAC signatures (HS256/384/512). Validate claims (exp, nbf, iss, aud). Generate new tokens with custom payloads. Everything runs client-side — your tokens and secrets never leave the browser.
jwttokenauthdecodersecurityapi
🔒 Everything runs client-side. Your tokens and secrets never leave the browser.
encoded token
color map
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkVrbyIsInJvbGUiOiJhdXRvbWF0aW9uLWVuZ2luZWVyIiwiaWF0IjoxNzE2MTU5MjAwLCJleHAiOjE3NDc3ODEyMDB9.placeholder_signatureverify signature (HMAC)
algo:HS256(from header)
header
algHS256
typJWT
payload
sub1234567890
nameEko
roleautomation-engineer
iat1716159200 (May 19, 2024, 10:53 PM)
exp1747781200 (May 20, 2025, 10:46 PM)
claim validation
ExpirationExpired May 20, 2025, 10:46 PM
Issued AtMay 19, 2024, 10:53 PM
Subject1234567890
signature
placeholder_signature