Regex Tester & Validator

Password validation pattern that enforces complexity rules via positive lookaheads: at least one lowercase letter, one uppercase letter, one digit, and one special character from a specific punctuation/symbol set. The trailing .* capture group combined with {8,10} is intended to constrain password length to 8-10 characters, though the greedy .* effectively only guarantees a minimum of 8. Typically used in user registration and form validation to enforce strong passwords.