Regex Editor & Tester

Matches Brazilian CPF (Cadastro de Pessoas Físicas) numbers in the standard formatted pattern: three groups of three digits separated by dots, followed by a hyphen and two check digits. Commonly used for validating user input in forms, masking CPF fields, or extracting CPFs from text. The flags gmi make it match repeatedly, case-insensitively (though case doesn't matter), and across multiple lines.