Developer Tools

Hash, AES-GCM, encoding.

Hash text, encrypt with AES-GCM, or encode and decode Base64 and other formats. These run entirely in the browser so you can work with sensitive data locally.

This category is for developers and technical users who need hashing, encryption, or encoding: checksums, password-based encryption, or safe handling of binary-like data in text form.

Common tasks include hashing text with SHA-256 or SHA-1, encrypting or decrypting a short message with a passphrase (AES-GCM), and encoding or decoding Base64 or URL-safe strings. All crypto runs in the browser; nothing is sent to our servers.

Use the hash generator for integrity checks or non-secret fingerprints. Use AES-GCM when you need to encrypt/decrypt with a password. For encoding only (no secrecy), use the Base64 or URL encode/decode tools in Text Tools.

Hashes and Encoding: When to Use Hash, Base64, and URL Encode
What hashes and encoding are for, when to use each, and how to use our free hash, Base64, and URL encode/decode tools.

Hash Generator
Generate SHA-256 or SHA-1 hashes in your browser using the Web Crypto API.
Open Hash Generator
AES-GCM Encrypt/Decrypt
Password-based AES-GCM (256-bit) with PBKDF2 key derivation; encrypt or decrypt text locally.
Open AES-GCM Encrypt/Decrypt

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Hash Generator

AES-GCM Encrypt/Decrypt