# Language Check

A fast, multi-engine prose linter for VS Code and Neovim with a Rust core.

Language Check catches grammar, spelling, and style issues in Markdown, HTML, LaTeX, Typst, reStructuredText, Org mode, BibTeX, Forester, and R Sweave files using [Harper](https://github.com/elijah-potter/harper), optional [LanguageTool](https://languagetool.org/), optional [Vale](https://vale.sh/), and optional [Proselint](https://github.com/amperser/proselint) integration.

::::{grid} 2

:::{grid-item-card} VS Code
![LangCheck in VS Code](/_static/vscode_example.png)
:::

:::{grid-item-card} Neovim
![LangCheck in Neovim](/_static/neovim_example.png)
:::

::::

:::{admonition} Early Development
:class: note

Language Check is in active early development. Core checking is stable and usable, but you may encounter bugs — please [report them](https://github.com/KaiErikNiermann/LangCheck/issues) and they will be fixed promptly. The configuration format may change between minor versions; backwards compatibility is a goal but not yet guaranteed.
:::

---

```{toctree}
:maxdepth: 2
:caption: User Guide

guide/installation
guide/neovim-setup
guide/languagetool-setup
guide/vale-setup
guide/proselint-setup
guide/configuration
guide/languages
guide/localization
guide/motivation
```

```{toctree}
:maxdepth: 2
:caption: Advanced

advanced/providers
advanced/plugins
advanced/api
```

```{toctree}
:maxdepth: 2
:caption: Extending

guide-config-language
guide-plugin-language
guide-wasm-plugin
tinylang-spec
```

```{toctree}
:maxdepth: 2
:caption: Reference

reference/cli
reference/config-schema
reference/publishing
reference/troubleshooting
```