Security & Encryption

Security, Encryption, and Hashing Tools

Encrypt data, generate hashes, encode strings, decode JWTs, all processed securely in your browser.

AES Encrypt / Decrypt

Encrypt and decrypt text or files using AES-256 encryption. Password-based encryption entirely in your browser.

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Base64 Encode / Decode

Encode text or files to Base64. Decode Base64 strings back to original data. Essential for web development.

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MD5 / SHA Hash

Generate cryptographic hashes: MD5, SHA-1, SHA-256, SHA-512. Hash text or files for integrity verification.

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JWT Decoder

Decode JSON Web Tokens (JWT). View header and payload. Verify HS256 signatures with secret key.

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About Security & Encryption tools

Handle sensitive cryptographic operations without exposing data to servers. Our security tools provide AES-256 encryption/decryption, Base64 encoding, MD5/SHA hash generation, and JWT decoding, all using browser-native Web Crypto API.

For maximum security, all operations happen client-side. Your keys, passwords, and data never leave your device. Perfect for developers, security professionals, and anyone needing quick cryptographic operations.

Frequently asked questions

Yes. We use AES-256-GCM, a strong symmetric encryption standard. However, encryption is only as secure as your passphrase. Use strong, unique passphrases for sensitive data.

The decoder can verify HS256 signatures if you provide the secret key. Other algorithms (RS256, ES256) show decoded payload and header but cannot verify without the public key.

No. Hash functions are one-way cryptographic operations. You cannot reverse a hash to get the original input. This makes them ideal for password storage and file integrity verification.
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