Method
The first two Base64URL parts are decoded. Signature is not verified.
JWT decoder
Decode JWT header and payload locally without claiming signature verification.
· Herramienta local⚡ Instant local calculation◎ No sign-up↔ ES / EN
Inputs
Change assumptions
How to use it
Use the result as a transparent planning estimate. Change one assumption at a time, compare scenarios and move to Toolkit when you need system-level simulation.
Limits
Do not paste production tokens on an untrusted device; this tool does not verify authenticity.
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Local by design
Your inputs are processed in this browser. This utility does not need an account, database or AI API.