Security

Encode text to Base64 or decode Base64 back to text.

Generate and verify Bcrypt hashes for secure password storage.

Generate HMAC hashes using various algorithms and a secret key.

Encode HTML-sensitive characters or decode HTML entities back to text.

Decode JSON Web Token headers and payloads without sending data anywhere.

Build unsigned JWT header and payload tokens for testing and demos.

Generate secure RSA public and private key pairs locally.

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes locally.

Encode or decode URL components safely.

Analyze password complexity, entropy, and estimated crack time.

Encode text to Base64URL or decode Base64URL back to text.

Inspect and decode data URI strings for embedded files or inline data.