BxSites Configuration Reference

One site config at the project root: bxsites.yaml (or .yml, default/ preferred) or bxsites.json (fully supported). If more than one is present, bxsites.yaml wins, then bxsites.yml, then bxsites.json. Only name is required - everything else defaults as shown. A partial theme object merges one level deep ({theme: {name: material}} keeps the default empty options).

name: "My Docs"
description: ""
baseURL: "/"
theme:
  name: bootstrap
  options: {}
  logo: ""
  favicon: ""
search: true
searchProvider:
  provider: local
  algolia: { appId: "", apiKey: "", indexName: "", insights: false }
nav: []
markdown:
  enableAdmonition: true
repo:
  url: ""
  editUri: ""
social: []
footer: false
lastUpdated: false
mermaid: false
math: false
analytics:
  provider: ""
  id: ""
ogImage: ""
generateOgImages: false
extraCss: []
extraJs: []
assets:
  fingerprint: true
  bundle: true
  images: { enabled: true, widths: [400, 800, 1200, 1600], formats: [original, webp] }
plugins: []
i18n:
  defaultLocale: { code: en, label: English }
  locales: []
blog:
  postsPerPage: 10
  feed: true
variables: {}

name / description

name (required) - site name, shown in header/brand mark and page titles. description - fallback <meta name="description">/og:description for any page without its own description frontmatter (see bx-sites-getting-started for page frontmatter).

baseURL

Controls prefixing for every internal link/asset/nav entry, and doubles as the canonical URL for sitemap.xml/robots.txt/llms.txt/canonical tags.

• Blank or "/" (default) - root-relative links (/page/); no sitemap.xml, no Sitemap: line, no canonical tags (no domain to build them from).
• A bare path ("my-docs" or "/my-docs/") - sub-path served (/my-docs/page/); still no sitemap/canonical (no absolute domain).
• A full URL ("https://docs.example.com/") - the path portion is used the same as a bare path, and sitemap.xml/robots.txt's Sitemap: line/every page's <link rel="canonical"> are generated. A version/locale tree points its canonical at its own URL, not the main site's.

llms.txt is always written regardless (absolute URLs when baseURL provides them, basePath-relative otherwise).

robots.txt

robots: true (default) writes Allow: / for every crawler plus a Sitemap: line (when baseURL is a full URL). robots: false writes Disallow: / and no Sitemap: line - a crawler opt-out only, not access control (the site is still fully reachable by URL - see bx-sites-deployment for real access restriction). Drop a hand-authored docs/robots.txt to bypass the generated one entirely (copied byte-for-byte, robots key ignored once this file exists).

theme

• theme.name - bootstrap/material/tailwind/a gallery theme name, or a custom theme's own name - see bx-sites-themes
• theme.logo/theme.favicon - path (resolved against docs/assets/, prefixed with baseURL) or absolute URL
• theme.options.colorMode - "auto" (default, follows OS)/"light"/"dark" first-visit default; a visitor's own toggle choice always wins after
• theme.options.navCollapsible - false (default): every nav section always expanded. true: sections get a collapse toggle; the section containing the current page always starts open.
• theme.options.navExpandAll - only with navCollapsible: true. true (default): every section starts open. false: every section starts collapsed except the current page's.
• theme.options.tocPosition - "top" (default, inline at article top) or "sticky" (pinned right-hand column on wide viewports; a collapsible top-pinned bar below that width)
• theme.options.pageMetaPosition - "bottom" (default, footer note) or "top" for the edit-page/download-markdown/last-updated row
• theme.options.pageActionsPosition - "top" (default) or "bottom" for the pageActions dropdown

search / searchProvider

search: true/false is the master switch regardless of provider. searchProvider.provider: "local" (default, MiniSearch + static index), "algolia" (needs algolia.appId/apiKey/indexName), "pagefind" (pagefind.bin/options, both optional), or any other string for a fully custom provider wired via a theme override. Full comparison and setup in bx-sites-search.

nav

Empty array (default) = infer from docs/'s folder/file structure (honoring page order/hidden frontmatter). A non-empty array replaces inference entirely - array order becomes nav order; a page not referenced is still built, just unlinked (same as hidden: true). Each entry is either:

• a bare docs/-relative path string ("guides/setup.md"), title from that page's own frontmatter/filename
• an object { title, path, icon, children } - path/icon/children all optional; a title-only entry with no path is an unlinked group heading; explicit title/icon override the page's own nav label/icon (the page's real <h1>/<title> is untouched)

nav:
  - index.md
  - title: Main Components
    children:
      - title: Quick Start
        path: guides/setup.md
      - guides/deployment.md

For a nav large enough to clutter bxsites.yaml, move it to docs/nav.json (same array shape as the whole file's top-level content) - bxsites.yaml's own non-empty nav always wins over it if both exist. Only the main tree honors either; a docs/versions/<name>/ tree always infers from its own folder structure.

redirects

Site-wide from/to pairs, main tree only. See the bx-sites-blog-versioning-i18n skill for the full picture including the per-page redirect_from frontmatter alternative.

redirects:
  - from: old-guide
    to: guides/new-guide/

markdown

Forwarded as-is to bx-markdown - not redefined/validated by bx-sites beyond enableAdmonition (bx-markdown itself defaults it false; bx-sites defaults it true). See bx-sites-markdown for the syntax each key controls.

Key	Default	Effect
enableAdmonition	true	!!!/???/???+ callouts
enableFootnotes	false	[^label] footnotes
enableDefinitionLists	false	Term\n: Definition lists
autoLinkUrls	true	Auto-links bare URLs/emails
anchorLinks	true	Clickable anchor link per heading
anchorSetId / achorSetName (sic)	true	id/name attrs on headings
anchorWrapText	false	Wraps whole heading text in the anchor
anchorClass	"anchor"	CSS class on the anchor <a>
anchorPrefix / anchorSuffix	""	Raw HTML before/after heading text
enableYouTubeTransformer	false	Auto-embeds bare YouTube links
codeStyleHTMLOpen/Close	<code>/</code>	Inline code wrapper
fencedCodeLanguageClassPrefix	"language-"	Class prefix highlighter/Mermaid key off
tableOptions.columnSpans	true	Honors colspan merged cells
tableOptions.appendMissingColumns	true	Pads a short row
tableOptions.discardExtraColumns	true	Drops a long row's extra cells
tableOptions.className	"table"	CSS class per <table>
tableOptions.headerSeparationColumnMatch	true	--- row must match header column count

repo

repo.url adds a header repo-icon link. repo.editUri (e.g. "edit/main/docs/") plus repo.url builds an "Edit this page" link per page.

social / footer

social - array of { url, icon, label }, rendered in the footer only when footer: true. icon is one of github/twitter(x)/youtube/ linkedin/facebook/bluesky/threads/slack/patreon/rss/email (generic link glyph otherwise). footer: true adds a copyright line, the social links, and a "Built with BxSites" credit to every page.

lastUpdated

false default. true adds a "Last updated" line sourced from git log on each page's own file at build time - silently omitted where git has no history for it (fresh repo, zip download, no git installed), rather than breaking the build.

analytics

Google Analytics only currently: provider: "google" + id: "G-ABC123".

ogImage / generateOgImages

ogImage - default social-card image (path resolved like theme.logo, or absolute URL); a page's own frontmatter ogImage always wins for that page. generateOgImages: true renders a real 1200x630 PNG per page lacking its own ogImage (pure java.awt, no headless browser/network needed).

extraCss / extraJs

Arrays of stylesheet/script URLs appended after the theme's own assets, each resolved like theme.logo. extraJs entries load with defer. When assets.bundle is on (default) and every entry is a local project file, they're bundled into one fingerprinted file each instead of one tag per entry - one external/missing entry falls the whole list back to per-URL tags.

assets

The image-resizing/bundling pipeline, on by default with sane settings - usually nothing to touch.

• assets.fingerprint (true) - content-hash names generated variants/ bundles for safe far-future caching; never renames a project's own originals under docs/assets/.
• assets.bundle (true) - concatenates extraCss/extraJs into one fingerprinted file each (pure BoxLang/JVM, no Node toolchain).
• assets.images.enabled (true) - resize/WebP + <picture> rewrite for eligible images; false falls back to plain unprocessed copying.
• assets.images.widths ([400, 800, 1200, 1600]) - breakpoints; a width at/above an image's own is skipped (never upscaled).
• assets.images.formats (["original", "webp"]).

mermaid / math / openapi

All false by default - true loads the client-side library (Mermaid/ KaTeX/Swagger UI) and activates the corresponding Markdown syntax. See bx-sites-markdown and bx-sites-content-blocks for the syntax itself.

pageActions

false default. true adds a "Copy" dropdown (Copy page/link, View as Markdown, Open in ChatGPT/Claude, Export as PDF, Report an issue, Share on X/LinkedIn/Facebook) - press c to toggle it too. Several sub-items only render when their prerequisite is set (baseURL full URL for link/share items, repo.url for "Report an issue"). No extra JS shipped unless this is on.

plugins

[] default - array of BoxLang module names to activate. See bx-sites-plugins.

i18n / blog / variables

See the bx-sites-blog-versioning-i18n and bx-sites-variables-functions skills for the full picture - these keys are metadata/tuning for content-authoring features, not build/deploy concerns.