Free Online Tools
Validate CPF, generate CNPJ, passwords, QR Codes and more. Fast, secure, runs in your browser.
Featured Tools
CPF Validator — Official Algorithm
Validate any CPF number instantly. Verify if a Brazilian individual taxpayer ID is real — instant verification, works on any device.
CPF Generator
Generate valid CPF numbers for testing and development. Supports batch generation with formatted or raw output. Built for developers and QA teams.
CNPJ Generator
Generate valid CNPJ numbers for testing and development. Bulk generation, formatted or digits-only output. Built for developers and QA engineers.
Password Generator
Generate strong, secure passwords with custom length, uppercase, lowercase, numbers and symbols. Runs 100% in your browser — nothing stored, nothing sent.
CNPJ Validator — Instant Check
Validate any CNPJ number online in seconds. Check if a Brazilian company registration is valid — instant results, works on mobile and desktop.
Percentage Calculator
Calculate percentages quickly: increase, discount, ratio and percentage change. 4 calculation modes with instant results. Free online calculator.
Alphanumeric CNPJ Validator — New 2026 Format
Validate CNPJs in the new alphanumeric format (IN RFB 2.119/2022, effective Jul 2026). First free online validator for the new Brazilian company ID format.
Alphanumeric CNPJ Generator
Generate valid alphanumeric CNPJs in the new RFB format (IN 2.119/2022). The first free tool for the 2026 Brazilian company ID format — ready for your test suite.
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Complete data
Precise and reliable results powered by official sources and validated algorithms.
Official sources
Data from the Central Bank, IRS, and open government databases. Always up to date.