JWT Debugger
Decode and inspect JSON Web Tokens on macOS without pasting bearer tokens into a public JWT debugger. DataEngUtils splits header and payload, validates base64url encoding, and highlights expirations locally — the workflow you want when debugging service-to-service auth, OAuth callbacks, or short-lived warehouse tokens. Security-conscious teams prefer an offline debugger because tokens often embed internal audience claims, tenant identifiers, and scopes that should never be logged by a third-party website. Use the browser demo for quick inspection, then switch to the desktop app when tokens arrive via clipboard detection from curl output or log tailing.
Try it free
How it works
1. Paste a JWT
Insert the encoded token from logs, curl output, or browser devtools.
2. Inspect claims
Read header alg, payload claims, and expiry timestamps in a syntax-highlighted view.
3. Copy decoded JSON
Share redacted claims in tickets without re-encoding the secret.
Why not use an online tool?
Online inspectors tools require uploading your pipeline inputs to a third-party server. For production work, that is a security and compliance risk. DataEngUtils runs locally — same convenience, none of the exposure.