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LaTeX Autofill is a free Obsidian community plugin that lets you search for LaTeX structures by meaning—using English or Chinese terms—and insert full formula templates with keyboard-navigable placeholders. You can also search by command when you know it. The project describes the feature as offline and not AI-powered.
What LaTeX Autofill does
The project calls LaTeX Autofill “IDE-style LaTeX autocomplete for Obsidian.” Its key difference is that you can look for a formula structure by describing it, rather than having to remember a command prefix. The project says its collection contains 236 curated entries, covering operators, relations, sets, logic, arrows, brackets, fonts, accents, functions, matrices, environments, spacing, probability and Greek letters. That count is the project’s stated inventory, not an independent count. Project README
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The README also says the plugin includes the plain Completr command list for cases where you do know a command’s name. The list is attributed to Completr by tth05 and is MIT licensed. Feature and comparison descriptions here reflect the project’s documentation, not independent testing.
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Search by meaning inside math
In a math expression delimited by $...$ or $$...$$, type an English word of at least three letters or a Chinese word without a leading backslash. For example, search using a word that describes the structure you want, such as “integral,” rather than first recalling its LaTeX command. The project says this backslash-free mode shows only curated entries to reduce accidental matches against ordinary formula text.
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Search by command or outside math
You can search by English name, Chinese name or the LaTeX command itself. Outside a math context, typing a backslash can trigger completion; the project says inserted content is then wrapped in math delimiters. The plugin leaves code blocks and inline code alone.
Fill in the template
After insertion, the first argument is selected. Press Tab to move to the next placeholder or Shift+Tab to move backward. Matrix cells and the entries in a cases environment are exposed as placeholders. The project also documents nested completion: completing a placeholder is intended to preserve the remaining placeholders in the outer formula.
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Browse the collection in its search window
Open the command palette and run the plugin’s search-window command, or select the Σ ribbon icon. In the window, press Enter to insert a selection, Shift+Enter to insert it wrapped in $ $, or Cmd/Ctrl+Enter to copy it.
Install LaTeX Autofill
The project and Obsidian’s community-plugin listing state a minimum requirement of Obsidian 1.7.2. The simplest documented installation route is through Obsidian’s community-plugin browser:
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- Open Settings → Community plugins.
- Select Browse and search for LaTeX Autofill.
- Select Install, then enable the plugin.
The README also documents installation through BRAT for early builds, and manual installation by placing main.js, manifest.json and styles.css in the vault’s .obsidian/plugins/latex-autofill/ folder before enabling it. Most users can start with the community-plugin browser. Obsidian Community Plugins listing
Does it work offline, and does it use AI?
The developer’s September 30, 2026 announcement describes LaTeX Autofill as working offline, without network or AI calls, and as free and MIT licensed. The repository also identifies the project as MIT licensed. These are project statements; they do not establish independent performance or reliability results. Developer announcement and project repository
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How it compares with other completion plugins
In its September 2026 comparison, LaTeX Autofill’s project distinguishes it from Easy LaTeX, LaTeX Complete and Completr primarily by whether users can search by meaning (including Chinese terms without a backslash), whether insertion gives a complete template with navigable placeholders, setup requirements, offline or AI behavior, and whether completion extends beyond LaTeX. Treat these as the project’s comparison claims, not a neutral benchmark; the README is the place to check its current feature-by-feature account. LaTeX Autofill README and comparison
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- If you often forget command names, meaning-based search and templates are the plugin’s central use case.
- If you already know a command, the included command list also supports looking it up by name.
- If you use LaTeX Suite, the project warns that its Tab behavior in math may conflict with LaTeX Autofill.
- The project advises against enabling Completr’s LaTeX provider at the same time.
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