Every developer and QA engineer eventually needs a pile of fake data: a folder of placeholder images, a stack of throwaway PDFs, a batch of realistic-looking JSON records, or a payment form that needs a card number that will pass validation but never actually charge anything.
Usually that means writing a one-off script, digging up an old test fixture, or copy-pasting the same lorem-ipsum block for the hundredth time. QA Fixture Lab exists to make that instant: pick a generator, set the parameters you need, and download a fixture that's ready to feed into your test suite, upload form, or staging database.
Every tool on this site runs entirely in your browser using JavaScript. Nothing you generate is uploaded to a server, logged, or stored anywhere — when you close the tab, it's gone unless you downloaded it.
Our test card number generator produces numbers that satisfy the public Luhn checksum used by real card networks — the same category of number that payment processors like Stripe and PayPal publish for their own sandbox testing. These numbers are not linked to any bank, person, or line of credit. They exist solely to test that your application's card-input validation, formatting, and network-detection logic behave correctly.
If there's a fixture type you keep building by hand, let us know and we'll consider adding it.