Regex Tester & Validator
Test, validate and match regular expressions
Test, validate and match regular expressions
This regex matches sequences of exactly 44 digits. It is commonly used to validate or extract barcode data from Interleaved 2 of 5 (ITF) formats, such as those used for Brazilian payment slips (boletos) and court fees (custas). The global and multiline flags ensure it can scan across multiple lines of text.