preview.nvim/README.md
2026-03-03 13:44:43 -05:00

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# preview.nvim
**Async document compilation for Neovim**
An extensible framework for compiling documents (LaTeX, Typst, Markdown, etc.)
asynchronously with error diagnostics.
## Features
- Async compilation via `vim.system()`
- Built-in presets for Typst, LaTeX, Markdown, and GitHub-flavored Markdown
- Compiler errors as native `vim.diagnostic`
- User events for extensibility (`PreviewCompileStarted`,
`PreviewCompileSuccess`, `PreviewCompileFailed`)
## Requirements
- Neovim 0.11+
## Installation
Install with your package manager of choice or via
[luarocks](https://luarocks.org/modules/barrettruth/preview.nvim):
```
luarocks install preview.nvim
```
## Documentation
```vim
:help preview.nvim
```
## FAQ
**Q: How do I define a custom provider?**
```lua
require('preview').setup({
typst = {
cmd = { 'typst', 'compile' },
args = function(ctx)
return { ctx.file }
end,
output = function(ctx)
return ctx.file:gsub('%.typ$', '.pdf')
end,
},
})
```
**Q: How do I override a preset?**
```lua
require('preview').setup({
typst = { env = { TYPST_FONT_PATHS = '/usr/share/fonts' } },
})
```
**Q: How do I automatically open the output file?**
Set `open = true` on your provider (all built-in presets have this enabled) to
open the output with `vim.ui.open()` after the first successful compilation. For
a specific application, pass a command table:
```lua
require('preview').setup({
typst = { open = { 'sioyek', '--new-instance' } },
})
```