diff --git a/README.md b/README.md
index 3ffbc38..4160267 100644
--- a/README.md
+++ b/README.md
@@ -21,18 +21,8 @@ Typst, Markdown, etc.)—diagnostics included.
 
 ## Installation
 
-With lazy.nvim:
-
-```lua
-{
-  'barrettruth/preview.nvim',
-  init = function()
-    vim.g.preview = { typst = true, latex = true }
-  end,
-}
-```
-
-Or via [luarocks](https://luarocks.org/modules/barrettruth/preview.nvim):
+Install with your package manager of choice or via
+[luarocks](https://luarocks.org/modules/barrettruth/preview.nvim):
 
 ```
 luarocks install preview.nvim
@@ -49,7 +39,7 @@ luarocks install preview.nvim
 **Q: How do I define a custom provider?**
 
 ```lua
-vim.g.preview = {
+require('preview').setup({
   rst = {
     cmd = { 'rst2html' },
     args = function(ctx)
@@ -59,15 +49,15 @@ vim.g.preview = {
       return ctx.file:gsub('%.rst$', '.html')
     end,
   },
-}
+})
 ```
 
 **Q: How do I override a preset?**
 
 ```lua
-vim.g.preview = {
+require('preview').setup({
   typst = { env = { TYPST_FONT_PATHS = '/usr/share/fonts' } },
-}
+})
 ```
 
 **Q: How do I automatically open the output file?**
@@ -77,7 +67,7 @@ open the output with `vim.ui.open()` after the first successful compilation in
 toggle/watch mode. For a specific application, pass a command table:
 
 ```lua
-vim.g.preview = {
+require('preview').setup({
   typst = { open = { 'sioyek', '--new-instance' } },
-}
+})
 ```
diff --git a/doc/preview.nvim.txt b/doc/preview.nvim.txt
index 2566301..e2747d6 100644
--- a/doc/preview.nvim.txt
+++ b/doc/preview.nvim.txt
@@ -23,20 +23,23 @@ REQUIREMENTS                                          *preview.nvim-requirements
 ==============================================================================
 SETUP                                                  *preview.nvim-setup*
 
-Set |vim.g.preview| before the plugin loads: >lua
+Load preview.nvim with your package manager. For example, with lazy.nvim: >lua
     {
       'barrettruth/preview.nvim',
-      init = function()
-        vim.g.preview = { typst = true, latex = true }
-      end,
     }
 <
+Call |preview.setup()| to configure providers before use.
 
 ==============================================================================
 CONFIGURATION                                      *preview.nvim-configuration*
 
-Configure by setting |vim.g.preview| to a table where keys are preset names
-or filetypes. For each key `k` with value `v` (excluding `debug`):
+Configure via `require('preview').setup()`.
+
+                                                            *preview.setup()*
+setup({opts?})
+
+  `opts` is a table where keys are preset names or filetypes. For each
+  key `k` with value `v` (excluding `debug`):
 
   - If `k` is a preset name and `v` is `true`, the preset is registered
     as-is under its filetype.
@@ -105,12 +108,6 @@ Provider fields:~
                                        |preview.Context| and returns a
                                        string[].
 
-  `detach`           boolean           When `true`, the viewer process opened
-                                       via a string[] `open` command is not
-                                       sent SIGTERM when the buffer is deleted.
-                                       Has no effect when `open` is `true`.
-                                       Default: `false`.
-
                                                         *preview.Context*
 Context fields:~
 
@@ -123,30 +120,30 @@ Context fields:~
 
 Example enabling presets:~
 >lua
-    vim.g.preview = { typst = true, latex = true, github = true }
+    require('preview').setup({ typst = true, latex = true, github = true })
 <
 
 Example overriding a preset field:~
 >lua
-    vim.g.preview = {
+    require('preview').setup({
       typst = { open = { 'sioyek', '--new-instance' } },
-    }
+    })
 <
 
 Example overriding the output path (e.g. latexmk `$out_dir`):~
 >lua
-    vim.g.preview = {
+    require('preview').setup({
       latex = {
         output = function(ctx)
           return 'build/' .. vim.fn.fnamemodify(ctx.file, ':t:r') .. '.pdf'
         end,
       },
-    }
+    })
 <
 
 Example with a fully custom provider (key is not a preset name):~
 >lua
-    vim.g.preview = {
+    require('preview').setup({
       rst = {
         cmd = { 'rst2html' },
         args = function(ctx)
@@ -156,7 +153,7 @@ Example with a fully custom provider (key is not a preset name):~
           return ctx.file:gsub('%.rst$', '.html')
         end,
       },
-    }
+    })
 <
 
 ==============================================================================
@@ -176,14 +173,14 @@ Import them from `preview.presets`:
 
 Enable presets with `preset_name = true`:
 >lua
-    vim.g.preview = { typst = true, latex = true, github = true }
+    require('preview').setup({ typst = true, latex = true, github = true })
 <
 
 Override individual fields by passing a table instead of `true`:
 >lua
-    vim.g.preview = {
+    require('preview').setup({
       typst = { env = { TYPST_FONT_PATHS = '/usr/share/fonts' } },
-    }
+    })
 <
 
 ==============================================================================
diff --git a/lua/preview/compiler.lua b/lua/preview/compiler.lua
index a193ad2..a3b9c47 100644
--- a/lua/preview/compiler.lua
+++ b/lua/preview/compiler.lua
@@ -291,9 +291,7 @@ function M.compile(bufnr, name, provider, ctx, opts)
       callback = function()
         M.stop(bufnr)
         stop_open_watcher(bufnr)
-        if not provider.detach then
-          close_viewer(bufnr)
-        end
+        close_viewer(bufnr)
         last_output[bufnr] = nil
       end,
     })
@@ -406,9 +404,7 @@ function M.compile(bufnr, name, provider, ctx, opts)
     once = true,
     callback = function()
       M.stop(bufnr)
-      if not provider.detach then
-        close_viewer(bufnr)
-      end
+      close_viewer(bufnr)
       last_output[bufnr] = nil
     end,
   })
@@ -511,9 +507,7 @@ function M.toggle(bufnr, name, provider, ctx_builder)
     callback = function()
       M.unwatch(bufnr)
       stop_open_watcher(bufnr)
-      if not provider.detach then
-        close_viewer(bufnr)
-      end
+      close_viewer(bufnr)
       opened[bufnr] = nil
     end,
   })
diff --git a/lua/preview/init.lua b/lua/preview/init.lua
index 322b893..fd54d71 100644
--- a/lua/preview/init.lua
+++ b/lua/preview/init.lua
@@ -10,7 +10,6 @@
 ---@field clean? string[]|fun(ctx: preview.Context): string[]
 ---@field open? boolean|string[]
 ---@field reload? boolean|string[]|fun(ctx: preview.Context): string[]
----@field detach? boolean
 
 ---@class preview.Config
 ---@field debug boolean|string
@@ -102,7 +101,6 @@ function M.setup(opts)
     end, 'false, "diagnostic", or "quickfix"')
     vim.validate(prefix .. '.open', provider.open, { 'boolean', 'table' }, true)
     vim.validate(prefix .. '.reload', provider.reload, { 'boolean', 'table', 'function' }, true)
-    vim.validate(prefix .. '.detach', provider.detach, 'boolean', true)
   end
 
   config = vim.tbl_deep_extend('force', default_config, {
@@ -248,8 +246,4 @@ M._test = {
   end,
 }
 
-if vim.g.preview then
-  M.setup(vim.g.preview)
-end
-
 return M