Security Tools
Generate passwords, hashes, and encode/decode with classic ciphers.
Password Generator
Generate strong, random passwords with custom character rules.
Password Strength Checker
Check how strong a password is, entirely in your browser.
Hash Generator
Generate SHA-1, SHA-256 and SHA-512 hashes of text.
ROT13 Cipher
Encode or decode text using the ROT13 letter-substitution cipher.
Caesar Cipher Encoder/Decoder
Encode or decode text with a Caesar cipher using any shift value.
HTML Entity Encoder/Decoder
Encode special characters to HTML entities, or decode them back.
Random PIN Generator
Generate random numeric PIN codes of any length.
Credit Card Number Validator
Check whether a card number passes the Luhn checksum.