Astro is a new static site builder that allows you to build static sites with your favorite frameworks like React, Svelte, Vue, Preact, and Solid. Static site builders or generators are frameworks that make web applications on top of UI frameworks into full static HTML content. Most of them ship JavaScript to the client-side for further client-side interaction on a web page, but Astro, by default, renders directly to HTML and CSS, shipping as little JavaScript as possible to the client, which can result in faster load time.