JWT Decoder

Decode JSON Web Tokens, inspect header and claims with readable dates, and verify HS, RS, PS and ES signatures — the token never leaves your browser.

Runs locally in your browser

Token

alg: HS256typ: JWT

Header

{
  "alg": "HS256",
  "typ": "JWT"
}

Payload

{
  "sub": "1234567890",
  "name": "John Doe",
  "iat": 1516239022
}

Verify signature

Secret or public key

Secret is Base64 encoded

Decoding and verification run entirely in your browser. Never paste production secrets into tools you do not trust.

More Developer tools