Developer Tools / CLIENT-SIDE UTILITY
JWT Inspector
Read token headers and payloads. Does not verify signatures or trustworthiness.
How to use this tool
Paste a three-part JSON Web Token. Run to decode its header and payload. No signature is verified and output cannot establish trust.
Use it for: Inspect an authentication token while diagnosing integration issues.
What to provide & expect
- Who it helps
- Developers and support teams
- Your input
- A three-part JWT without a Bearer prefix.
- Your result
- Decoded header, claims and unverified expiry timestamps.
- Limits to know
- No signature, issuer or audience verification. Never use the output to grant access.
Example
Inspect a deliberately unsigned demonstration token. Inspection never verifies authenticity.
Sample data only. Your inputs stay in this browser.
Private by design. Inputs are neither stored nor transmitted. Reloading clears this workspace.