Validators
Check documents and common inputs with public rules and instant results.
Categories
Documents
Validators for Brazilian documents with check digits.
Contact
Validators for emails, phone numbers, and contact data without external lookup.
Addresses
Validators for CEPs and address data with local processing.
Payments
Local validators for payment-data format and check digits without external lookup.
Vehicles
Local validators for vehicle plates and identifiers without official lookup.
All validators tools
Available tools organized by their main use case.
Documents
Validators for Brazilian documents with check digits.
CPF Validator
Check whether a CPF has valid check digits.
CNPJ Validator
Check whether a CNPJ has valid check digits.
CPF and CNPJ Formatter
Format CPF and CNPJ with masks, remove punctuation, and copy the result in the browser without validating registration or checking Receita Federal.
PIS/PASEP Validator
Check PIS, PASEP, NIS, or NIT check digits locally in the browser without querying official Brazilian systems.
Brazilian State Registration Validator
Check Brazilian IE format and check digits by state in your browser. See rule coverage without looking up registration status.
Brazilian driving licence (CNH) validator
Check the structure and check digits of a Brazilian CNH national registration number using compared public conventions, without an official lookup.
Brazilian Voter ID Validator
Check in the browser whether a Brazilian voter registration number has a compatible UF code and check digits, without querying electoral status.
Contact
Validators for emails, phone numbers, and contact data without external lookup.
Addresses
Validators for CEPs and address data with local processing.
Payments
Local validators for payment-data format and check digits without external lookup.
Brazilian Boleto and Payment Line Validator
Check the format and check digits of Brazilian boleto payment lines and numeric barcodes in your browser. This does not confirm authenticity.
Credit Card Validator
Check locally whether a card number has a plausible format and valid Luhn check digit without sending or saving the number.
Vehicles
Local validators for vehicle plates and identifiers without official lookup.