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Passwords, hashes, encryption, ciphers — all client-side.
19 tools
Generate strong, customizable secure passwords instantly.
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text.
Encode and decode text with ROT13, Caesar, Atbash, and Vigenère ciphers.
Check password strength: entropy, crack time, patterns, and breach check.
AES-256-GCM encrypt and decrypt text with a passphrase — runs in your browser.
Generate HMAC-SHA256/512 signatures for API authentication and webhooks.
Build and sign JWTs with HS256/384/512. Verify signatures. Runs in your browser.
Generate live TOTP/2FA codes from a base32 secret. Scan QR with any authenticator.
Compute SHA-1/256/384/512 of any file and verify integrity — 100% browser-based.
Hash passwords with bcrypt and verify hashes — adjustable cost factor, runs locally.
Build Content Security Policy headers visually with live preview and presets.
Browser-side openssl rand replacement. Hex, base64, base64url, and alphanumeric secrets with the equivalent terminal command.
Check SSL/TLS certificate details and expiry for any domain.
Inspect PEM certificates, keys, and CSRs in your browser.
Hide encrypted text inside any PNG using LSB steganography. Decode later.
Check if a password has leaked in a data breach — hashed locally, never sent in full.
Generate an Ed25519 or RSA SSH key pair entirely in your browser.
Generate an RFC 9116 security.txt file for responsible vulnerability disclosure.
Create SRI integrity="sha384-..." hashes for scripts and stylesheets.