Browser utility

JWT Decoder

Paste any JSON Web Token to instantly decode its header, payload, and signature. Timestamps converted to human-readable dates. Your token never leaves your browser.

01 Input

Paste your JWT below — it never leaves your browser

Not a valid JWT — expecting three dot-separated Base64url segments.

02 Options

Timestamp format

JSON display

03 Output

Token Summary

Header

Payload

Signature Unverified

Signature not verified — verification requires the secret key and runs server-side.