JWT Decoder
Decode JSON Web Tokens to inspect header, payload, and verify claims. Shows expiry, issuer, and all JWT claims in a clean, readable format.
#jwt#token#decode#auth#bearer
Frequently Asked Questions
What is a JWT?
A JSON Web Token (JWT) is a compact, URL-safe token format for transmitting claims between parties. It consists of three Base64URL-encoded parts: header, payload, and signature.
Is it safe to decode a JWT here?
Yes. JWTs are not encrypted by default—they're only signed. The header and payload are publicly readable Base64URL-encoded JSON. This tool never sends your token to a server.
Can I verify a JWT signature here?
JWT signature verification requires the secret key or public key. This tool shows you the decoded contents without signature verification, which is useful for inspecting claims.