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) — Free 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) — Free 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 — Free 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) — Free 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 — Free 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) — Free 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 — Free 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) — Free 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 — Free 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 — Free Check whether a PDF is digitally signed and inspect its certificates, validity period, and signer details — free, with no file leaving your browser.