Reviewed practical guide
How to use Generate fictional test card data and verify the result
Completes test prefixes for Visa, Mastercard, American Express or Discover, calculates Luhn and adds synthetic expiry, CVV and holder fields.
Completes test prefixes for Visa, Mastercard, American Express or Discover, calculates Luhn and adds synthetic expiry, CVV and holder fields. Choose the network your interface should accept and use the output only in validators or test environments that cannot process payments.
Practical example: Verify formatting, spacing, network icons and Luhn validation in a simulated checkout form. Post-process verification is part of the workflow: a successful download alone does not prove that the content is correct.
What result to expect
A data set with valid length and checksum over test numbering, with no connection to an operational card.