Password, QR code, and security utilities
Check password strength and get suggestions to improve security
Generate QR codes for URLs, text, email, and more
Read and decode QR codes from uploaded images
Generate barcodes in CODE128, EAN-13, and other formats
Generate Ed25519 or ECDSA SSH key pairs using the Web Crypto API — runs 100% in your browser
Generate 2048-bit or 4096-bit RSA key pairs in PEM format using the Web Crypto API — runs 100% in your browser
Compare two hash values to verify file integrity or passwords
Drag and drop any file to instantly compute its MD5, SHA-1, SHA-256 and SHA-512 checksums — verify integrity against a known hash
Generate time-based one-time passwords (TOTP) from a secret key — compatible with Google Authenticator
Validate any credit card number instantly — checks Luhn algorithm, identifies card type (Visa, Mastercard, Amex). Free valid credit card checker, nothing is stored.
Hash passwords using PBKDF2-SHA256 and verify hashes — client-side secure key derivation
Convert UUIDs between standard, braces, URN, no-hyphens, Base64, and integer formats
Generate strong, memorable passphrases using the EFF diceware wordlist with cryptographic randomness
Encrypt and decrypt text using AES-256-GCM — runs 100% in your browser via Web Crypto API
Generate cryptographically secure BIP39 mnemonic seed phrases (12/15/18/21/24 words) — 100% offline, audited @scure/bip39 library
Derive Bitcoin and Ethereum public keys and addresses from a private key — all math runs locally in your browser