Regex Tester & Validator

Matches strings containing only whitelisted characters: alphanumeric characters (case-insensitive), German umlauts (äöüÄÜÖ) and ß, plus spaces, slashes, colons, parentheses, commas, apostrophes, periods, and hyphens. Used to validate input data before submission to Schufa, the German credit bureau, ensuring fields contain only permitted characters and rejecting any with special or invalid symbols.