📋 Validators

Batch CNPJ Validator

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

CNPJs (one per line)

How to validate many CNPJs?

Paste your list (one CNPJ per line, formatted or not) and click validate. The tool processes the entire list in your browser.

Validation uses the modulo-11 check-digit algorithm with cyclic weights and supports the new alphanumeric format.

100% local processing.

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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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Pix Key Validator

Validate Brazilian Pix keys of any type: CPF, CNPJ, email, phone (+55) or random UUID. Detects the type automatically.