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Firmador y Validador de JWT Online
Crea, firma y valida JSON Web Tokens (JWT) con claves secretas HS256, HS384, HS512 o RSA.
Resumen Rápido:
Firma y verifica tokens JWT online gratis. Soporta algoritmos HMAC y RSA con claims personalizados.
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What is Firmador y Validador de JWT Online?
JWT Signer allows developers to construct custom JWT Headers and Payloads, sign them with HMAC secrets or RSA private keys, and verify token signatures in real time.
Unlike traditional online utilities that upload your sensitive payloads to a remote server, TechnoLila's Firmador y Validador de JWT Online executes 100% locally in your web browser using modern JavaScript APIs, HTML5 Canvas, and SVG vector rendering. No barcodes, asset IDs, Wi-Fi credentials, tokens, or proprietary payloads ever leave your device.
How to Use Firmador y Validador de JWT Online Online
1. Enter your JWT payload JSON (claims, sub, exp, roles).
2. Choose algorithm (HS256, HS384, HS512).
3. Enter secret key and generate signed JWT token.
2. Choose algorithm (HS256, HS384, HS512).
3. Enter secret key and generate signed JWT token.
Firmador y Validador de JWT Online Example
Example Input:
Payload: {"sub": "user_123", "role": "admin"}, Secret: my-secret-keyExample Output:
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...Common Use Cases
• Mocking Auth Headers: Create test tokens for Postman API testing.
• Token Verification: Test signature validity during auth gateway debugging.
• Token Verification: Test signature validity during auth gateway debugging.
Common Mistakes & Gotchas
• Mixing up base64-encoded secrets with raw ASCII secret strings.
Frequently Asked Questions
Is my secret key transmitted across the internet?
No. Cryptographic signing occurs entirely inside your browser using the Web Crypto API.
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