Security tools

Password generators, encryption tools, accessibility checkers, and security utilities.

Secret Message Encryptor/Decryptor
Lock a private message with a secret password only you and the recipient know.
Hide Message in Image
Hide a secret message inside a picture, then reveal it from the PNG later.
Password Generator
Generate strong random passwords with Web Crypto.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly in your browser.
Color Contrast Checker
Check WCAG contrast ratio between foreground and background colors in real time.