Small utilities, built to be useful
Client-side generators and validators for everyday development and testing. Nothing you enter or generate here is sent to a server — everything runs locally in your browser. All generated data is fictitious and intended for development and testing purposes only.
GUID / UUID Generator
Generate v4 UUIDs, in bulk, with formatting options.
CPFCPF Generator & Validator
Fictitious, format-valid Brazilian CPF numbers for testing.
CNPJCNPJ Generator & Validator
Fictitious, format-valid Brazilian CNPJ numbers for testing.
💳Test Credit Card Numbers
Luhn-valid test card numbers for payment form testing — not real cards.
IBANTest IBAN Generator & Validator
Structurally valid, fictitious IBANs for testing — not real accounts.
+More coming soon
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