Integration Guide

Table Of Contents
Website Payments Standard Integration Guide September 2008 13
P
Preface
About This Guide
The Website Payments Standard Integration Guide describes how to integrate your website
with PayPal by using HTML buttons and forms. Website Payments Standard lets you accept
payments for:
z Single-item purchases with Buy Now buttons – Sell from websites that offer single or
mutually exclusive products.
z Contribution payments with Donate buttons – Raise financial support for any cause.
z Recurring bills with Subscribe buttons – Collect membership dues, set up installment
plans, and offer other subscription services.
z Multiple-item purchases with Add to Cart and View Cart buttons – Sell from online
stores with catalogs and shopping carts.
The following table summarizes the contents of this guide.
TABLE P.1 Summary of the Contents of This Guide
Feature Description See
Buy Now Buttons Accept payments for single items at one time.
Chapter 1, “Single-Item
Payments – Buy Now
Buttons
Donate Buttons Accept payments for donation and contributions.
Chapter 2, “Contribution
Payments – Donate Buttons
Subscribe Buttons Accept recurring payments for membership dues,
installment plans, and other subscription services.
Chapter 3, “Recurring
Payments – Subscribe
Buttons
The PayPal Shopping
Cart
Accept payments for multiple items at one time.
Chapter 4, “The PayPal
Shopping Cart – Add to Cart
and View Cart Buttons
Third-Party Shopping
Carts
Develop a third-party shopping cart that is
compatible with PayPal and Website Payments
Standard.
Chapter 5, “Third-Party
Shopping Carts – The Cart
Upload Command
Button Protection and
Encrypted Website
Payments
Protect against fraudulent payments by protecting
the code in your payment buttons with the
encryption setting when you create buttons on the
PayPal website or with Encrypted Website
Payments when you write or generate payment
buttons yourself.
Chapter 6, “Securing Your
Website Payments Standard
Buttons