Regex Tester & Validator

This regular expression matches an entire string that contains only alphanumeric characters, including basic Latin letters, digits, and extended Latin characters used in various European languages. It specifically covers Unicode ranges for Latin-1 Supplement and Latin Extended-A/B, allowing for accented letters like é, ü, and ñ. It is highly useful for validating international names, street addresses, or any text input where standard English alphanumeric validation is too restrictive.