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Validators
ISO 639 Language Code Validator
Validate ISO 639-1 (2-letter), 639-2 (3-letter) and 639-3 language codes with lookup of the corresponding name and language family.
Related Tools
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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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Batch CNPJ Validator
Validate a list of CNPJs (one per line) with a summary of valid, invalid and total. No data sent to servers.