Configuration Reference

To configure Astro, add an astro.config.mjs file to the root of your project.

export default /** @type {import('astro').AstroUserConfig} */ ({
  // all options are optional; these values are the defaults
  projectRoot: './',
  public: './public/',
  dist: './dist/',
  src: './src/',
  pages: './pages/',
  renderers: [
    '@astrojs/renderer-svelte',
    '@astrojs/renderer-vue',
    '@astrojs/renderer-react',
    '@astrojs/renderer-preact',
  ],
  vite: {},
});

projectRoot

The projectRoot option sets the working directory used by Astro. Astro will resolve all other directory options from this path.

Default: The current working directory.

public

The public option sets the directory used to resolve public assets. Astro does not process any files within this directory.

Default: The public directory within the projectRoot directory.

dist

The dist option sets the directory used to output the final build of the project. Contents of the public directory are also copied into this directory.

Default: The dist directory within the projectRoot directory.

src

The src option sets the directory used to resolve source files, like pages. Astro may process, optimize, and bundle any files in this directory.

Default: The src directory within the projectRoot directory.

pages

The pages option sets the directory used to resolve pages, relative to the src option.

Default: The pages directory within the src directory.

renderers

The renderers option defines the framework renderers to be used by Astro.

Default: An array of @astrojs/renderer-svelte, @astrojs/renderer-vue, @astrojs/renderer-react, and @astrojs/renderer-preact. To assign no renderers at all, you must provide an empty array ([]).

buildOptions

The buildOptions option configures how a site is built, including its base URL (buildOptions.site), whether it includes a sitemap (buildOptions.sitemap), whether markdown draft pages should be included in the build (buildOptions.drafts), and whether its pages should be files (path.html) or directories (path/index.html) (buildOptions.pageUrlFormat).

devOptions

The devOptions option configures features used during development, including the server hostname (devOptions.hostname), the server port (devOptions.port), and whether urls should include a trailing slash (devOptions.trailingSlash).

vite

The vite option configures the internals of Vite. These options can be explored on ViteJS.dev.

markdownOptions

The markdownOptions option assigns options to the Markdown parser. These options can be explored on GitHub.

You can view the entire configuration API on GitHub.