The links are also shareable, so you can create a fixed amount or variable amount tipping page using any LNURL or Lightning Address.

Example of a fixed tipping page. Fresh BOLT11 invoice for 69 sats generated on page load. https://www.lnurlpay.com/corndalorian@ln.tips/69

Example of variable amount tipping page https://www.lnurlpay.com/corndalorian@ln.tips