What role does Stripe.js play in enhancing a website's security?

Stripe.js plays a crucial role in enhancing a website's security by simplifying the integration of card payment fields in a safe manner. This JavaScript library allows developers to create secure payment forms that do not handle sensitive payment information directly on their servers. Instead, Stripe.js handles the tokenization of payment data, meaning that when a user inputs their card details, this data is sent directly to Stripe’s servers rather than being processed on the website's backend.

By using Stripe.js, sensitive card information is never exposed to the merchant's servers, significantly reducing the risk of data breaches and enhancing overall security compliance with standards like PCI-DSS. This way, developers can ensure that they comply with the highest security practices while offering a seamless payment experience for users.

The other options do not accurately reflect the primary security role that Stripe.js provides in the payment processing ecosystem.