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Inspect JWT Header and Payload claims, human-readable `exp` and `iat` dates, and expiration status entirely inside your browser.
Your inputs stay in your browser. Make something useful.
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Here’s how to get the most out of jwt decoder.
Pasting authentication tokens into server-side debugging websites can expose active session credentials. SoftLimes decodes your JWT strictly inside your browser tab using client-side Base64URL decoding—no network request ever contains your token.
A few things you might want to know before you start.
Never. Decoding runs 100% locally in your browser JavaScript environment.
No. The Header and Payload of a standard JWS token are Base64URL-encoded, not encrypted. Only verifying the signature requires the secret or public key.
Even on client-side tools, security best practice is to use test or staging tokens whenever possible.
Use our related Unix Timestamp Converter tool linked below.
