JWT.io
Decode, verify, and generate JSON Web Tokens online

JWT.io is a free online tool for decoding, validating, and generating JSON Web Tokens (JWTs). It allows developers to inspect the header and payload of a JWT and verify its signature using a secret. The site also serves as an educational resource explaining the JWT standard.
Users paste a JWT into the decoder, which splits it into header and payload components and optionally verifies the signature against a provided secret.
software developers working with authentication and APIs
Background.
- Status
- launched
- Business model
- free
- Company
- Auth0
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