🇦🇺 Validators

TFN Australia Validator

Validates Australian Tax File Number of 8 or 9 digits using official ATO check digit algorithm.

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CPF Validator

Validate Brazilian CPF numbers instantly using the official algorithm. Useful for testing document validation in applications. No data sent to servers.

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Batch CPF Validator

Validate a list of CPFs (one per line) and see which are valid and which are not. No data sent to servers.

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Batch CNPJ Validator

Validate a list of CNPJs (one per line) with a summary of valid, invalid and total. No data sent to servers.