01
Do you store my tokens?
Never. Decoding happens client-side. We strictly advise against pasting production tokens with sensitive secrets into any online tool, but ours is safe by design (offline-capable).
Decode JWTLocal & Safe
Debug headers and payloads instantly. Zero Server Interaction. Signatures are NOT verified.
Frequently Asked Questions
Everything you need to know about the tool.
02
Does it verify the signature?
We decode the payload for debugging. Signature verification requires your private key, which we do not ask for security reasons.
Private & Secure
Processing happens 100% in your browser. Files are never uploaded to any server.
Blazing Fast
Powered by WebAssembly for near-native performance. No waiting for uploads.
No Install
Works on any device (Windows, Mac, Chromebook, Mobile) directly in Chrome/Edge/Firefox.