JWT Decoder
Decode a JSON Web Token to inspect its header and payload — locally, without sending it anywhere.
Runs entirely in your browser · nothing is uploaded · free & unlimited
Your token is decoded locally in this browser tab and is never sent to a server.
How it works
- 1Paste a JSON Web Token — the three dot-separated parts (header, payload and signature).
- 2We Base64URL-decode the header and payload and pretty-print them as JSON, right here in your browser.
- 3Inspect the claims — expiry, issued-at and not-before times are shown as readable dates. Copy any part you need.
Frequently asked questions
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