Search...Search plugins and themes...
⌘K
Sign in
  • Get started
  • Download
  • Pricing
  • Enterprise
  • Account
  • Obsidian
  • Overview
  • Sync
  • Publish
  • Canvas
  • Mobile
  • Web Clipper
  • CLI
  • Learn
  • Help
  • Developers
  • Changelog
  • About
  • Roadmap
  • Blog
  • Resources
  • System status
  • License overview
  • Terms of service
  • Privacy policy
  • Security
  • Community
  • Plugins
  • Join the community
  • Discord
  • Forum / 中文论坛
  • Merch store
  • Brand guidelines
Follow us
DiscordTwitterBlueskyThreadsMastodonYouTubeGitHub
© 2026 Obsidian

JS Engine

Moritz JungMoritz Jung48k downloads

Run JavaScript from within your notes.

Add to Obsidian
  • Overview
  • Scorecard
  • Updates43

This plugin for Obsidian allows you to run JavaScript from within your notes using special code blocks.

Usage

Start by creating a code block with js-engine as the code block language. Inside the code block you can write what ever JavaScript code that you want. The plugin will run the JavaScript and render the returned value in place of the code block.

## This is a Note in Obsidian

```js-engine
return engine.markdown.create('*test*');
```

Debugging your Code

Debugging your code blocks can be difficult, but JS Engine aims to make it a bit simpler. While writing your code blocks, you can use the js-engine-debug code block language. The special language adds a small icon to the top right corner of the code block that lets you easily rerun and view stats about the code block. Once you are happy with your code block you can switch back to the js-engine code block language to get rid of the small icon. Other than the icon, the two codeblocks behave identically.

API Docs

Docs are available here.

Examples

Markdown Builder

let markdownBuilder = engine.markdown.createBuilder();

markdownBuilder.createHeading(2, 'Test Heading');
markdownBuilder.createParagraph('This is a test paragraph.');

markdownBuilder.createHeading(3, 'This is a sub heading');
markdownBuilder.createHeading(4, 'This is a sub sub heading');
markdownBuilder.createParagraph('This is another test paragraph.');

return markdownBuilder;

Output

Test Heading

This is a test paragraph.

This is a sub heading

This is a sub sub heading

This is another test paragraph.

Rendering Strings as Markdown

let str = '*test*';
return str;
let str = '*test*';
return engine.markdown.create(str);

The top example renders the string as plain text and the second one renders the text as markdown.

Output

*test*

test

Importing JS

let lib = await engine.importJs('lib.js');
return lib.getGreeting();

With a file named lib.js in the root of the vault.

export function getGreeting() {
    return 'Hello!';
}

Output

Hello!

79%
HealthExcellent
ReviewCaution
About
Run JavaScript inside notes using js-engine code blocks and render the returned value inline as text or markdown. Use js-engine-debug to rerun and inspect blocks, and tap the engine API to build markdown programmatically or import local JS files.
CodeMarkdownTemplating
Details
Current version
0.3.5
Last updated
2 weeks ago
Created
3 years ago
Updates
43 releases
Downloads
48k
Compatible with
Obsidian 1.4.0+
License
GPL-3.0
Report bugRequest featureReport plugin
Sponsor
GitHub Sponsors
Author
Moritz JungMoritz Jungmoritz-jung
www.moritzjung.dev
GitHubmprojectscode
  1. Community
  2. Plugins
  3. Code
  4. JS Engine

Related plugins

Templater

Create and use dynamic templates.

Fantasy Statblocks

Create, manage and view a Fantasy Bestiary with Dungeons and Dragons style statblocks.

CustomJS

Reuse custom JavaScript across desktop and mobile.

Importer

Import data from Notion, Evernote, Apple Notes, Microsoft OneNote, Google Keep, Bear, Roam, and HTML files.

Outliner

Work with your lists like in Workflowy or Roam Research.

Various Complements

Complete words similar to auto-completion in an IDE.

Linter

Format and style your notes. Linter can be used to format YAML tags, aliases, arrays, and metadata; footnotes; headings; spacing; math blocks; regular Markdown contents like list, italics, and bold styles; and more with the use of custom rule options.

PlantUML

Generate PlantUML diagrams.

Periodic Notes

Manage your daily, weekly, and monthly notes.

Auto Link Title

Automatically fetches the titles of links from the web.