This tool builds Paypal Links for you. Either for a one-time buy or a subscription.
I made this because Paypal's own methods for building these links are harder to find every year. This tool is entirely in JavaScript, none of your data is transferred anywhere (unless you use the TinyURL link).
You need to make sure your data makes sense yourself. Also check that the generated links do what you want. Absolutely no warranties are given. Use at your own risk.
A splitbrain.org Service.