Documentation

docs/insiders/index.md

@@ -88,11 +88,12 @@ a handful of them, [thanks to our awesome sponsors]!
 ## What's in it for me?
 
 The moment you [become a sponsor][how to become a sponsor], you'll get __immediate
-access to 24 additional features__ that you can __start using now__, and
+access to 25 additional features__ that you can __start using now__, and
 which are currently exclusively available to sponsors:
 
 <div class="mdx-columns" markdown>
 
+- [x] [Instant previews] :material-alert-decagram:{ .mdx-pulse title="Added on January 28, 2023" }
 - [x] [Footnote tooltips] :material-alert-decagram:{ .mdx-pulse title="Added on January 24, 2023" }
 - [x] [Tags plugin: advanced settings] :material-alert-decagram:{ .mdx-pulse title="Added on December 23, 2023" }
 - [x] [Tags plugin: nested tags] :material-alert-decagram:{ .mdx-pulse title="Added on December 23, 2023" }
@@ -308,6 +309,7 @@ are released for general availability.
 
 #### $ 24,000 – Blockpaprika
 
+- [x] [Instant previews]
 - [x] [Projects plugin]
 - [x] [Social plugin: custom layouts]
 - [x] [Social plugin: background images]
@@ -318,6 +320,7 @@ are released for general availability.
 - [x] [Tags plugin: shadow tags]
 - [x] [Tags plugin: advanced settings]
 
+  [Instant previews]: ../setup/setting-up-navigation.md#instant-previews
   [Projects plugin]: ../plugins/projects.md
   [Social plugin: custom layouts]: ../setup/setting-up-social-cards.md#customization
   [Social plugin: background images]: ../plugins/social.md#option.background_image

docs/setup/setting-up-navigation.md

@@ -74,6 +74,40 @@ The progress indicator will only show if the page hasn't finished loading after
 400ms, so that fast connections will never show it for a better instant
 experience.
 
+### Instant previews :material-alert-decagram:{ .mdx-pulse title="Added on January 28, 2024" }
+
+<!-- md:sponsors -->
+<!-- md:version insiders-4.52.0 -->
+<!-- md:feature -->
+<!-- md:flag experimental -->
+
+Instant previews are a brand new feature that allow the user to preview another
+site of your documentation without navigating to it. They can be very helpful to
+keep the user in context. A link can be opted into instant previews with the
+`data-preview` attribute:
+
+```` markdown title="Link with instant preview"
+``` markdown
+[Attribute Lists](#){ data-preview }
+```
+````
+
+<div class="result" markdown>
+
+[Attribute Lists](extensions/python-markdown.md#attribute-lists){ data-preview }
+
+</div>
+
+Instant previews can also be enabled globally by adding the following lines to
+`mkdocs.yml`, which will enable instant previews for all internal links,
+alleviating the need to add data attributes:
+
+``` yaml
+theme:
+  features:
+    - navigation.instant.preview
+```
+
 ### Anchor tracking
 
 <!-- md:version 8.0.0 -->