Security Tools · 31 tools
AES text encryption, HMAC, TOTP codes, JWT generator, file checksums, passphrases, secure random keys and classic ciphers — all using your browser’s built-in crypto.
- HMAC GeneratorHMAC SHA-256/384/512 with a secret key
- AES Text Encryptor & DecryptorAES-256 password encryption in your browser
- TOTP Code GeneratorGenerate 2FA codes from a Base32 secret
- Passphrase GeneratorRandom word passphrases that are easy to remember
- JWT Generator (HS256)Create signed JWTs for testing APIs
- ROT13, ROT47 & Atbash CipherROT13, ROT47 and Atbash text ciphers
- Vigenère CipherEncrypt and decrypt with a keyword
- Invisible Text HiderHide secret text inside normal text
- IBAN ValidatorValidate IBAN format and checksum
- Random Key & Token GeneratorSecure random API keys and secrets
- JWT Signature VerifierVerify HS256, RS256 and ES256 JWT signatures
- MD5, SHA & CRC32 Checksum GeneratorMD5, SHA-1/256/512, CRC32 from text
- File Hash Checker (SHA-256, SHA-512, SHA-1)Get or verify the checksum of any file
- File Encryptor & Decryptor (AES-256)Lock any file with a password — AES-256, in your browser
- Atbash Cipher (Encode & Decode)Mirror the alphabet: A becomes Z, B becomes Y
- Rail Fence Cipher (Zigzag Encoder)Write text in a zigzag over rails and read it row by row
- A1Z26 Cipher (Letters to Numbers)A=1, B=2 … Z=26 — letters to numbers and back
- ROT47 Encoder & DecoderRotate all printable characters by 47 places
- Affine Cipher (Encode & Decode)Encrypt letters with (a × x + b) mod 26
- Polybius Square CipherLetters to row-column number pairs (5×5 grid)
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