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Obsidian Easy LaTeX

An Obsidian plugin that provides intelligent LaTeX auto-completion in math contexts, with multilingual keyword support (Chinese, Japanese, Korean, English) and AI-powered formula generation.

Features

LaTeX Command Completion

Type \ inside math contexts ($...$, $$...$$, or LaTeX code blocks) to get a searchable suggestion list of 200+ LaTeX commands. Filter by prefix or description.

Multilingual Keyword Completion

Type math terms in your language directly in math contexts — no backslash needed. The plugin matches them to relevant LaTeX commands.

• Chinese: 积分 → \int, 矩阵 → \begin, 约等于 → \approx (prefix matching supported)
• Japanese: せきぶん → \int, ぎょうれつ → \begin, ぶんすう → \frac
• Korean: 적분 → \int, 행렬 → \begin, 분수 → \frac
• English: type \keyword in math mode (e.g., \frac → \frac{}{})

Custom Keyword Mappings

Define your own keyword-to-LaTeX mappings in Settings → Easy LaTeX → Custom Keyword Mappings.

• Latin keywords: type \keyword in math mode to trigger. E.g., map div → \frac{$1}{$2}, then typing \div suggests \frac{}{} with cursor positioned inside the first {}.
• CJK keywords (Chinese/Japanese/Korean): type the keyword directly. E.g., map 分数 → \frac{$1}{$2}, then typing 分数 replaces it with \frac{}{}.
• Snippets support $1, $2 tabstop placeholders for cursor positioning.

Example: Map div → \frac{$1}{$2}. Now typing \div in a math zone shows your custom \frac{}{} suggestion alongside the built-in \div (÷).

Field	Description	Example
Keyword	The trigger text	div, 分数, ぶんすう, 분수, bracket
LaTeX Snippet	The LaTeX to insert (include \ prefix)	\frac{$1}{$2}, \left($1\right)

AI Formula Generation

Press Tab on selected text inside a math zone, and the AI will convert your natural language description into LaTeX code. Works with any OpenAI-compatible API.

Installation

Obsidian Community Plugin Store

1. Open Obsidian Settings → Community Plugins
2. Click Browse and search for "Easy LaTeX"
3. Click Install, then Enable

Manual

1. Download main.js, styles.css, and manifest.json from the latest release
2. Create a folder easy-latex inside your vault's .obsidian/plugins/ directory
3. Copy the three files into that folder
4. Enable the plugin in Obsidian Settings → Community Plugins

AI Configuration

Go to Settings → Easy LaTeX to configure:

Setting	Description	Default
API URL	OpenAI-compatible API endpoint	https://api.openai.com/v1/chat/completions
API Key	Your API key	—
Model	Model name (e.g., gpt-4o-mini, deepseek-chat)	gpt-4o-mini
System Prompt	System prompt sent to the AI	Built-in LaTeX converter prompt

The AI feature is optional — the completion list works without any API configuration.

License

MIT