✅Validators

Validators check whether a number or document is formally correct: CPF, CNPJ, credit card, Pix key, IBAN, email and more. Validation checks the check digit and the format — it does not confirm that the document exists or belongs to someone. Use them to catch typos in forms and sign-ups.

243 tools

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Finnish Henkilötunnus Validator

Validates Finnish personal identity code (DDMMYYCZZZQ) with date, century separator and alphanumeric checksum.

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Brazilian Boleto Decoder (Typeable Line & Barcode)

Decodes Brazilian boleto slips: converts the typeable line into the 44-digit barcode, checks every digit and extracts bank, due date and amount.

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CNJ Lawsuit Number Validator

Validates Brazilian CNJ lawsuit numbers by checking the MOD 97-10 check digit and decodes year, court branch, tribunal and originating unit.