- Internet Explorer version 11 and later
- Chrome version 30 and later
- Firefox version 30 and later
- Safari version 7 and later
- Opera version 23 and later
- If your site loads in a third-party web view, for example, if a buyer views your store after clicking a link on a social media mobile app, the PayPal Smart Payment Buttons continue to work.
- PayPal recommends against loading your own site in a web view. This integration style is unsupported.
Smart Payment Buttons continue to work if popup blockers are active. However, PayPal recommends that you not use popup blockers with this integration.