Complete tooling for authoring Hyperbooks in Visual Studio Code. This extension provides live preview, snippets, auto-completion, syntax highlighting, and schema validation for Hyperbook projects.

All you need for writing Hyperbooks (auto preview, snippets, auto-completion and more).

You can preview your Hyperbook pages by clicking the preview icon in the top right-hand corner or by running the command Show side preview.

To keep the extension small, it does not include the large runtimes of Pyodide, Typst, GeoGebra, OpenSCAD, Excalidraw, Blockflow, the Online IDE, and the SQL IDE. The preview resolves them like a Hyperbook build:

• If your hyperbook.json sets cdn for an element, the preview loads it from that CDN.
• Otherwise the preview uses the runtime from the Hyperbook CLI's asset cache. The extension and the CLI share this folder, so a runtime downloaded by either one works for both.
• A runtime that is not downloaded yet loads from the element's default CDN. The preview offers to download it.

To download runtimes for offline use, run Hyperbook: Download Element Runtimes... or Hyperbook: Download All Element Runtimes. They work like hyperbook assets fetch and hyperbook assets fetch --all. Downloads are verified with SHA-256 and stored in the CLI's cache folder: ~/.cache/hyperbook/assets on Linux, ~/Library/Caches/hyperbook/assets on macOS, and %LOCALAPPDATA%\hyperbook\assets on Windows. HYPERBOOK_ASSET_CACHE and XDG_CACHE_HOME change it, as for the CLI.

The hyperbook.json is validated against a schema, which presents you from making mistakes. It also enables a color picker for your brand color.

Each element has its own syntax highlighting. So you know when you typed it right.

Each element can be inserted by using a snippet. Type : and hit your auto-completion key combo (default Ctrl+Space).

• Glossary terms

  • Move your cursor between the curly braces of a term/t element, e.g.: :t[My term]{
  • Type # to trigger the completion

• Link to book pages

  • Type / to trigger the completion

• Link to files in the public folder

  • Type / to trigger the completion

• Archives

  • Move your cursor in the src parameter of an archive element, e.g.: :archive[My archive]{src=
  • Type " to trigger the completion

See CHANGELOG for more information.