Decode JWT header and payload. Does not verify signatures.
Free online JWT decoder. Inspect JSON Web Token headers and payloads without verifying signatures — perfect for debugging auth tokens locally. Decoding happens in your browser; tokens are not sent to a server.
What you can do
Decode JWT header and payload
Pretty-printed JSON output
Does not verify signatures (debug only)
Private client-side decoding
Category: Crypto / Security
jwt
token
decode
auth
DevKit runs in your browser. No login, no paywall, and nothing is uploaded to a server.
Decode JWT header and payload. Does not verify signatures.