There are many options for search such as Algolia or a custom search. Out of these, Pagefind seems to be the lowest-bandwith, free, and most practical option for a static website because it is a framework-agnostic client-side search that is extremely fast due to being written in Rust and only loading indexed fragments upon actual search.

Due to being framework agnostic, there is a little bit of setup to get it working without issue. However, there is an Astro integration that seems to make the setup simple and even allows for search to work during local development.

In the future, we might upgrade search to use an LLM but Pagefind currently serves the most practical purpose.