🔒 Privacy first: All decoding happens entirely in your browser using JavaScript. Your token is never sent to any server. Signature verification is not performed — this tool is for inspection only.
Paste JWT Token

Paste a JWT above to inspect it

Header 
Payload

Signature

Signature bytes displayed as hexadecimal. Verification requires the secret/public key and is not performed here.
Encode/decode Base64 → Base64 Encoder
Format JSON → JSON Formatter
Generate hashes → Hash Generator