Credit card matcher

Credit Cardity: Online Validator

Have you ever wondered what the information on your credit card actually means? A quick read of anatomy of a credit card shows me the possibility of presenting an easy to use tool to decode the hidden secrets of your credit card code, with no risk and no pain.

  • Easy-to-understand reports show if your number is valid with a Luhn check
  • Learn where a card was issued
  • Find the account number on your credit card
  • Works with Mastercard, Visa, AMEX, Discover, and more
  • Also includes support for dining, club and air cards

Simply type your credit card number into the form above, and hit enter. You can enter the number in either AAAABBBBCCCCDDDD or AAAA-BBBB-CCCC-DDDD format!

Here are some examples of valid credit card numbers and completely invalid numbers. Verisign kindly provides the following test numbers:


All pure CSS, HTML, and Javascript

There are no images used. The credit cards and logos are all hand-coded with HTML and CSS.

Feel free to use, modify, and distribute this library as much as you'd like under the MIT license.

Visit the Github page and follow the instructions to get started.

Can I just use the CSS to style cards?

Yes! Right now, card ships with pure-CSS cards for Mastercard, Visa, Discover, and American Express. You can see a demo usage here.

You can contribute to the library on Github here.


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Credit card matcher

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