JWT Decoder & Verifier

Decode header/payload, inspect claims, and verify signatures (HS/RS).

Token

Paste your JWT below (three base64url parts separated by dots)

Decoded

Header, Payload, and Signature

Header

                
Payload

                
Signature

                

Verification

Validate the signature and token time claims

Status: —

Tips

  • Works offline. All decoding is local to your browser.
  • For HS256/384/512, enter your shared secret to verify.
  • For RS256/384/512, paste a PEM public key to verify.
  • Time claims (exp/nbf/iat) are shown in your local timezone.