diff --git a/.storybook/main.js b/.storybook/main.js
index d5cb59c1c..13ca83d95 100644
--- a/.storybook/main.js
+++ b/.storybook/main.js
@@ -38,6 +38,40 @@ module.exports = {
             use: ["@svgr/webpack"],
         });
 
+        // Support Svelte
+        config.module.rules.push({
+            test: /\.svelte$/,
+            use: [
+                {
+                    loader: "svelte-loader",
+                    options: {
+                        compilerOptions: {
+                            dev: true,
+                        },
+                        emitCss: true,
+                        hotReload: true,
+                    },
+                },
+            ],
+        });
+
+        // TODO: make the mock work
+        // Force Storybook to always use the mock instead of the real component ?
+        config.resolve.alias["./src/pat/contentbrowser/src/App.svelte"] = path.resolve(
+            __dirname,
+            "../src/pat/contentbrowser/src/App.mock.js"
+        );
+        config.resolve.alias["#pat/contentbrowser/src/App"] = path.resolve(
+            __dirname,
+            "../src/pat/contentbrowser/src/App.mock.js"
+        );
+        config.resolve.alias["./src/pat/contentbrowser/src/SelectedItem.svelte"] =
+            path.resolve(__dirname, "../src/pat/contentbrowser/src/App.mock.js");
+        config.resolve.alias["#pat/contentbrowser/src/App"] = path.resolve(
+            __dirname,
+            "../src/pat/contentbrowser/src/SelectedItem.mock.js"
+        );
+
         return config;
     },
 };
diff --git a/package.json b/package.json
index 5e75d9e4e..e7b2f1507 100644
--- a/package.json
+++ b/package.json
@@ -101,6 +101,16 @@
         "sass": "~1.77.8",
         "underscore": "1.13.7"
     },
+    "imports": {
+        "#pat/contentbrowser/src/App": {
+            "storybook": "./src/pat/contentbrowser/src/App.mock.js",
+            "default": "./src/pat/contentbrowser/src/App.svelte"
+        },
+        "#pat/contentbrowser/src/SelectedItem": {
+            "storybook": "./src/pat/contentbrowser/src/SelectedItem.mock.js",
+            "default": "./src/pat/contentbrowser/src/SelectedItem.svelte"
+        }
+    },
     "scripts": {
         "clean": "rimraf docs/_site",
         "build:webpack": "NODE_ENV=production webpack --config webpack.config.js",
diff --git a/src/pat/contentbrowser/contentbrowser.docs.mdx b/src/pat/contentbrowser/contentbrowser.docs.mdx
new file mode 100644
index 000000000..7788fa398
--- /dev/null
+++ b/src/pat/contentbrowser/contentbrowser.docs.mdx
@@ -0,0 +1,48 @@
+import { Meta, Story } from "@storybook/addon-docs";
+import { ContentBrowser } from "./contentbrowser.stories.js";
+
+<Meta title="Patterns/ContentBrowser" />
+
+# Contentbrowser
+
+Show a widget to select items in an offcanvas miller-column browser.
+
+## Configuration
+
+```md
+|        Option        |  Type   |                 Default                 |                                                                   Description                                                                    |
+| :------------------: | :-----: | :-------------------------------------: | :----------------------------------------------------------------------------------------------------------------------------------------------: |
+|    vocabularyUrl     | string  |                  null                   |                                         This is a URL to a JSON-formatted file used to populate the list                                         |
+|      attributes      |  array  | ['UID', 'Title', 'portal_type', 'path'] |            This list is passed to the server during an AJAX request to specify the attributes which should be included on each item.             |
+|       rootPath       | string  |                   "/"                   |                                         Browsing/searching root path. You will not get beneath this path                                         |
+|       rootUrl        | string  |                                         |                                                           Browsing/searching root url.                                                           |
+|       basePath       | string  |            set to rootPath.             |                                                        Start browse/search in this path.                                                         |
+|     contextPath      | string  |                                         |                    Path of the object, which is currently edited. If this path is given, this object will not be selectable.                     |
+|      favorites       |  array  |                   []                    | Array of objects. These are favorites, which can be used to quickly jump to different locations. Objects have the attributes "title" and "path". |
+| maximumSelectionSize | integer |                   -1                    |       The maximum number of items that can be selected in a multi-select control. If this number is less than 1 selection is not limited.        |
+|         mode         | string  |                "browse"                 |                                                       Toggle between "browse" and "search"                                                       |
+|        width         | integer |                                         |                                                  Override the width of the selected items field                                                  |
+|        bSize         | integer |                   10                    |                                                     Batch size of the items listed in levels                                                     |
+|       maxDepth       | integer |                                         |                                                      Maximum level depth for "browse" mode                                                       |
+|      separator       | string  |                   ','                   |                                              Select2 option. String which separates multiple items.                                              |
+|        upload        | boolean |                                         |                                        Allow file and image uploads from within the related items widget.                                        |
+|     recentlyUsed     | boolean |                  false                  |                                                      Show the recently used items dropdown.                                                      |
+|   recentlyUsedKey    | integer |                                         |               Storage key for saving the recently used items. This is generated with fieldname and username in the patternoptions.               |
+| recentlyUsedMaxItems | integer |                   20                    |                                         Maximum items to keep in recently used list. 0: no restriction.                                          |
+| customComponentKeys  |  dict   |                   {}                    |                                      Register custom components. Currently only "SelectedItem" implemented                                       |
+```
+
+## Examples
+
+### Simple
+
+<br />
+<Story name="Content Browser" of={ContentBrowser} />
+
+```html
+<input
+    type="text"
+    class="pat-contentbrowser"
+    data-pat-contentbrowser='{"selectableTypes": ["Document"], "vocabularyUrl": "contentbrowser-test.json"}'
+/>
+```
diff --git a/src/pat/contentbrowser/contentbrowser.js b/src/pat/contentbrowser/contentbrowser.js
index 2968dede0..ba833529f 100644
--- a/src/pat/contentbrowser/contentbrowser.js
+++ b/src/pat/contentbrowser/contentbrowser.js
@@ -4,6 +4,11 @@ import registry from "@patternslib/patternslib/src/core/registry";
 import utils from "../../core/utils";
 import plone_registry from "@plone/registry";
 
+// TODO: make SB mock work ?
+// Subpath imports from package.json (so Storybook can mock them)
+import SelectedItem from "#pat/contentbrowser/src/SelectedItem";
+import ContentBrowserApp from "#pat/contentbrowser/src/App";
+
 // Contentbrowser pattern
 
 export const parser = new Parser("contentbrowser");
diff --git a/src/pat/contentbrowser/contentbrowser.stories.js b/src/pat/contentbrowser/contentbrowser.stories.js
new file mode 100644
index 000000000..6fb0de2e2
--- /dev/null
+++ b/src/pat/contentbrowser/contentbrowser.stories.js
@@ -0,0 +1,45 @@
+import $ from "jquery";
+import { RenderHTML } from "../../../.storybook/setup.js";
+import ContentBrowserComponent from "./contentbrowser.js";
+
+export default {
+    title: "Patterns/ContentBrowser",
+    parameters: {
+        mockData: [
+            {
+                url: "/contentbrowser-test.json", // Fake API URL
+                method: "GET",
+                status: 200,
+                response: {
+                    items: [
+                        {
+                            UID: "1234",
+                            Title: "Example Document",
+                            path: "/example-document",
+                        },
+                        { UID: "5678", Title: "Another Item", path: "/another-item" },
+                    ],
+                },
+            },
+        ],
+    },
+};
+
+// Basic Contentbrowser
+const getContentBrowser = (args) => `
+    <input
+        type="text"
+        class="pat-contentbrowser"
+        data-pat-contentbrowser='{"vocabularyUrl": "${args.vocabularyUrl}"}'
+    />
+`;
+
+// TODO:
+// Story for this component: error Invalid URL
+// Check svelte components mocks ?
+export const ContentBrowser = {
+    render: (args) => RenderHTML(args, getContentBrowser),
+    args: {
+        vocabularyUrl: "/contentbrowser-test.json",
+    },
+};
diff --git a/src/pat/contentbrowser/src/App.mock.js b/src/pat/contentbrowser/src/App.mock.js
new file mode 100644
index 000000000..712cc064c
--- /dev/null
+++ b/src/pat/contentbrowser/src/App.mock.js
@@ -0,0 +1,17 @@
+console.log("Using App:", import.meta.url);
+
+// TODO:
+// How to prevent App.svelte from running ?
+// both mock and real App.svelte are running rn
+if (typeof window !== "undefined") {
+    console.log({ aqui: window.ContentBrowserApp });
+    window.ContentBrowserApp = "alala";
+    console.log({ aqui: window.ContentBrowserApp });
+}
+
+export default function MockContentBrowserApp({ target, props }) {
+    console.log("MockSelectedItem initialized with", props);
+    target.innerHTML = `<div style="border: 2px solid blue; padding: 10px;">
+          Mocked Content Browser App
+      </div>`;
+}
diff --git a/src/pat/contentbrowser/src/App.svelte b/src/pat/contentbrowser/src/App.svelte
index 36d608240..83dbc5292 100644
--- a/src/pat/contentbrowser/src/App.svelte
+++ b/src/pat/contentbrowser/src/App.svelte
@@ -1,4 +1,6 @@
 <script>
+    console.log("Using App:", import.meta.url);
+
     import logger from "@patternslib/patternslib/src/core/logging";
     import { getContext } from "svelte";
     import ContentBrowser from "./ContentBrowser.svelte";
diff --git a/src/pat/contentbrowser/src/SelectedItem.mock.js b/src/pat/contentbrowser/src/SelectedItem.mock.js
new file mode 100644
index 000000000..5918f4dd1
--- /dev/null
+++ b/src/pat/contentbrowser/src/SelectedItem.mock.js
@@ -0,0 +1,6 @@
+export default function MockSelectedItem({ target, props }) {
+    console.log("MockSelectedItem initialized with", props);
+    target.innerHTML = `<div style="border: 2px solid blue; padding: 10px;">
+      Mocked Selected Item
+  </div>`;
+}