Free · Browser-Based · Instant Results
JWT Decoder
Decode JWT header and payload locally, inspect claims like exp and iat, and turn Unix-based claim times into readable timestamps.
🎯 Common Use Cases
Inspect copied access tokens
Read expiration dates instantly
Review header and payload JSON locally
Spot malformed JWT structures quickly
❓ Frequently Asked Questions
Does this verify the signature?
No. This page decodes and summarizes claims, but it does not validate signatures.
What claim fields are highlighted?
exp, iat, and nbf are converted into readable ISO timestamps.
Is the token uploaded?
No. Decoding stays in your browser.