Auth Developer Mini-Toolkit
Auth Developer Mini-Toolkit
In-browser passkey, JWT/JWE, JWK/JWKS, HMAC, SAML, and TOTP tools for developers. Perfect for authentication development and testing.
JWT & JWE Debugger
Decode & verify JWTs; encrypt/decrypt JWEs.
[Open JWT & JWE Debugger\
JWK Generator
Convert PEM <> JWK, JWK <> PEM, export JWKS for jwks_uri
[Open JWK Generator\
HMAC Tool
Generate & verify HMAC SHA-256/384/512 for webhooks.
[Open HMAC Tool\
SAML Testing Tool
Spin up a mock SAML SP to test SAML assertions.
[Open SAML Testing Tool\
TOTP Authenticator
Quickly test OTP codes (RFC 6238).
[Open TOTP Authenticator\
Password Hash Generator and Verifier
Client-side tool to generate/verify password hashes with parameters (Argon2id, bcrypt, scrypt, PBKDF2)
[Open Password Hash Generator and Verifier\
Base64 Decode and Encode
Easily encode or decode Base64 strings directly.
[Open Base64 Decode/Encode\
UUID v7 Generator & Timestamp Extractor
Generate and inspect UUID v7 values directly in your browser.
[Open UUID v7 Generator\
SSL Checker
Check any domain's SSL/TLS certificate. View expiration date, issuer, subject alternative names, and full certificate chain status.
[Open SSL Checker\
OIDC Discovery Endpoint Explorer
Fetch and inspect any OIDC provider's .well-known/openid-configuration. View authorization endpoints, token endpoints, JWKS, scopes, and signing algorithms.
[Open OIDC Discovery Explorer\
Passkey Demo & WebAuthn Tester
Create a real passkey, inspect the WebAuthn credential, and verify a sign-in in your browser.
[Open Passkey Demo\
SMS Cost Calculator
Estimate your SMS OTP costs by country and provider, and see how much WhatsApp OTP with SMS fallback would save you.
[Open SMS Cost Calculator\
More Coming Soon
We're constantly adding new authentication tools. Stay tuned for more developer resources.
Learn More
Want the "why" behind the tools? Start here.
JWE vs JWT: Key Differences, Use Cases, and Security Tips
Read Article
What is JWKS?: JSON Web Key Set Explained with Examples
Read Article
What is TOTP (RFC 6238 explained)
Read Article
5 Common TOTP Mistakes Developers Make
Read Article
Password Hashing & Salting - Function and Algorithm Explained
Read Article
Password Hashing: How to Pick the Right Hashing Function
Read Article
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