JWT Decoder
Decode JWT tokens to inspect the header, payload, and signature. View expiration status and human-readable timestamps.
This tool decodes but does NOT verify JWT signatures. Never trust a token based on its decoded contents alone.
Token Timestamps
Issued At (iat):
Expires At (exp):
Not Before (nbf):
Frequently Asked Questions
How do I decode a JWT token online?▾
Paste your JWT token into the input field and the header, payload, and signature are decoded and displayed instantly with syntax-highlighted JSON. No server round-trip required.
Does this tool verify JWT signatures?▾
No. This tool only decodes the token to show its contents. It does not verify signatures. Never trust a token based solely on its decoded contents.
What claims does the JWT decoder display?▾
All claims in the payload are shown as formatted JSON. Standard time claims (iat, exp, nbf) are also displayed as human-readable dates, and the expiration status is shown as a badge.
Is my JWT data safe when using this decoder?▾
Yes. All decoding happens entirely in your browser. No token data is ever sent to a server.