JWT Generator & Secret Token Debugger
Generate, decode, and verify JSON Web Tokens (JWT) with custom payload claims, secret signatures, and HMAC-SHA256 100% locally inside your browser.
Understanding JSON Web Tokens (JWT)
What is a JWT?
A JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object.
HMAC SHA-256 Security
Token signatures are generated locally inside your browser using the HTML5 Web Crypto API (crypto.subtle.importKey & crypto.subtle.sign). Your secret keys and token contents are never transmitted.
Detailed Guide & Use Cases
How JWT Generator & Secret Token Debugger works and best practices
Inspect, decode, and generate JSON Web Tokens (JWT). View token headers, claim payloads, exp expiration timestamps, and test HMAC-SHA256 secret key verification.
Frequently Asked Questions (FAQ)
Common questions about JWT Generator & Secret Token Debugger
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