How Sidian Works

2 min readby Rouven Bardtke#sidian#guide
Date10 May 2026
AuthorRouven Bardtke

How Sidian Works

Sidian is built around a simple idea: your notes are already in Obsidian, so publishing them should be a single click.

The flow

  1. Write — author notes in Obsidian as you normally would
  2. Sync — the Sidian plugin detects changes and pushes them to your site
  3. Share — anyone with your link (and password, if set) can read your notes

No build step. No terminal. No Git.

What gets synced

The plugin watches your vault for changes and syncs incrementally — only the files that changed since the last sync are sent. A full vault re-sync only happens on first connect.

Supported content:

  • Standard Markdown (headings, bold, italic, tables, code blocks)
  • [[Wikilinks]] — resolved to internal links on your site
  • Callouts — > [!note], > [!tip], > [!warning] and more
  • Frontmatter properties (title, tags, date)
  • #tags inline and in frontmatter
  • ==Highlights==
  • Mermaid diagrams
  • Math — $inline$ and $$block$$
Binary files

Images and other binary files are synced and served via a proxy — no extra setup needed.

Auth options

You can protect your site at three levels:

LevelWhat it protects
Site passwordThe entire site
Folder passwordA specific folder
Note passwordA single note

Mix and match — for example, keep most of your site public but lock a private/ folder behind a separate password.

Next steps

Updated 20 May 2026