Tools
Free tools
Free utilities to validate, decode, and understand Brazilian documents and lawsuits. They run 100% in your browser — nothing is sent to servers.
CPF validator
Check whether a Brazilian CPF is valid using the mod-11 algorithm.
CNPJ validator
Check whether a Brazilian company tax ID (CNPJ) is valid using the mod-11 algorithm.
CNJ number decoder
Break a CNJ process number into its components (court, year, unit).
Brazilian CNPJ lookup
Look up company name, registration status, address, activity codes, and partners from a CNPJ.
CNJ number generator
Generate valid CNJ process numbers for testing court API integrations.
Brazilian NFe key decoder
Break a 44-digit Brazilian NFe access key into its components (state, CNPJ, model, number).
Procedural deadline calculator
Count deadlines in business or calendar days, skipping Brazilian federal holidays, Carnival, and the forensic recess.