Visa credit card numbers can be used to test payment applications and e-commerce websites. For example, if you are a developer, you can use the Visa Credit Card Generator to test your application before releasing it.
Similarly, if you are an e-commerce merchant, you can use the Visa Credit Card Generator to test your website before making it live.
The Visa Credit Card Generator is also useful for educational purposes. Students can use the tool to generate test credit card numbers and then use them to practice their skills.