This is a delightfully practical little Rust tool that bridges two popular markdown ecosystems: Obsidian (the beloved personal knowledge management app) and mdBook (Rust's go-to static site generator for documentation). It's a preprocessor that translates Obsidian-flavored markdown syntax into something mdBook can render correctly.

If you've ever maintained a personal Obsidian vault and wished you could publish parts of it as a polished documentation site without rewriting every [[wikilink]], ![[embedded note]], or callout block, this scratches exactly that itch. Obsidian uses non-standard syntax for wikilinks, transclusions, callouts (> [!note]), and image embeds — none of which mdBook understands out of the box. A preprocessor like this sits in the build pipeline and silently rewrites these into mdBook-compatible equivalents.

Why it's interesting:

• It tackles a real friction point that anyone straddling Obsidian + static site publishing has felt.
• Written in Rust, so it integrates cleanly into the mdBook ecosystem (which is itself Rust-native).
• It's the kind of small, focused utility that gets the job done without trying to be a full publishing platform.

Who would benefit:

• Note-takers turned authors: people who draft books, technical guides, or course material in Obsidian and want a clean publishing path.
• Open-source maintainers who use Obsidian for design docs and want to publish them as project documentation.
• Digital gardeners looking for an mdBook-based alternative to Quartz or Obsidian Publish.

It's an early-stage project with zero stars, so contributions, edge-case bug reports, and syntax-coverage expansions are likely very welcome. Worth a look if your knowledge graph deserves a wider audience.