Crypto & Security
Hash, encrypt, and generate secure values without uploading anything: MD5 to SHA-512, HMAC, bcrypt, AES encryption, UUIDs, BIP39 passphrases, and OTP codes.
Text Hash Generator (MD5, SHA-256, SHA-512) Hash any text with MD5, SHA-1, SHA-256, SHA-512, SHA-3, or RIPEMD-160 and copy the hex or binary digest. Free, instant, and computed in your browser. HMAC Generator Online (MD5 to SHA-512) Compute HMAC signatures for any text and secret key using MD5, SHA-1, SHA-256, SHA-512, and more. Free, instant, and computed in your browser. Bcrypt Hash Generator & Checker Online Generate bcrypt password hashes with a configurable cost factor and verify passwords against existing hashes — free and fully in your browser. UUID Generator Online (v1, v4, v5) Generate v1, v4, or deterministic v5 UUIDs in one click, with custom name and namespace support for v5. Free, unlimited, and generated in your browser. ULID Generator Online Generate ULIDs — sortable, collision-resistant 26-character identifiers that fit in 128 bits. Free, unlimited, and created right in your browser. Encrypt & Decrypt Text Online (AES, 3DES) Encrypt text with AES, TripleDES, RC4, or Rabbit using a passphrase, and decrypt ciphertext back. Free, symmetric, and done entirely in your browser. BIP39 Mnemonic Passphrase Generator Generate BIP39 mnemonic seed phrases in 10 languages, with entropy round-tripping and validation — free, offline, and computed in your browser. RSA Key Pair Generator Online (PEM) Generate RSA public and private key pairs as PEM files at 1024, 2048, or 4096 bits — free, instant, and produced entirely in your browser. Password Strength Analyzer & Crack Time Analyze a password's entropy, charset, and estimated crack time at a billion guesses per second — free, private, and analyzed in your browser. PDF Signature Checker Online Check whether a PDF is digitally signed and inspect its certificates, validity period, and signer details — free, with no file leaving your browser.