diff --git a/docs/userGuide/plugins/custardui.md b/docs/userGuide/plugins/custardui.md
new file mode 100644
index 0000000000..542edf8bb2
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@@ -0,0 +1,71 @@
+### Plugin: CustardUI
+
+
+
+This plugin automatically injects the [CustardUI](https://custardui.js.org/) auto-init script into the page, enhancing generated static sites with more interactivity and personalization.
+
+
+
+CustardUI provides additional custom elements like ``, ``, placeholders, page highlighting capabilities, and more.
+
+
+
+To enable this plugin, add `custardui` to your site's plugins.
+
+```js {heading="site.json"}
+{
+ ...
+ "plugins": [
+ "custardui"
+ ]
+}
+```
+
+
+
+By default, the plugin sets the `data-base-url` attribute for CustardUI to `/`. If you are hosting your site in a subdirectory or need to customize this base URL, you can configure it under `pluginsContext`.
+
+```js {heading="site.json"}
+{
+ ...
+ "pluginsContext": {
+ "custardui": {
+ "baseUrl": "/my-base-url"
+ }
+ }
+}
+```
+
+
+
+
+
+**Adding a CustardUI configuration file**:
+
+After enabling the plugin, create a `custardui.config.json` file in your site's root directory. This tells CustardUI what options and features to expose to your readers.
+
+
+
+Make sure your `site.json` ignore list does not exclude JSON files, or MarkBind will not copy `custardui.config.json` into the generated site and the plugin will not work.
+
+
+
+Here is a sample configuration with the settings panel enabled:
+
+```json {heading="custardui.config.json"}
+{
+ "config": {
+ "toggles": [
+ { "toggleId": "mac", "label": "macOS", "description": "Show macOS instructions" },
+ { "toggleId": "win", "label": "Windows", "description": "Show Windows instructions" }
+ ]
+ },
+ "settings": {
+ "enabled": true
+ }
+}
+```
+
+With this configuration, readers will see a settings panel they can use to switch between viewing macOS and Windows content. For more information, check out the [CustardUI documentation](https://custardui.js.org/).
+
+
diff --git a/docs/userGuide/usingPlugins.md b/docs/userGuide/usingPlugins.md
index 9f7cc9fdd9..3232d123cc 100644
--- a/docs/userGuide/usingPlugins.md
+++ b/docs/userGuide/usingPlugins.md
@@ -66,6 +66,7 @@ MarkBind has a set of built-in plugins that can be used immediately without inst