diff --git a/.oxlintrc.json b/.oxlintrc.json
index cc24e72..698338e 100644
--- a/.oxlintrc.json
+++ b/.oxlintrc.json
@@ -15,7 +15,7 @@
   },
   "globals": {
     "defineProps": "readonly",
-    "defineEmits": "readonly"
+    "defineModel": "readonly"
   },
   "rules": {
     "id-length": "off",
diff --git a/.vitepress/theme/index.ts b/.vitepress/theme/index.ts
index f4ef4da..2603404 100644
--- a/.vitepress/theme/index.ts
+++ b/.vitepress/theme/index.ts
@@ -4,6 +4,7 @@ import { h } from 'vue';
 import './variables.css';
 import './main.css';
 import 'virtual:group-icons.css';
+import ApiOutline from '../../components/ApiOutline.vue';
 import CarbonAds from '../../components/CarbonAds.vue';
 import ModuleIndex from '../../components/ModuleIndex.vue';
 import StatusContent from '../../components/StatusContent.vue';
@@ -22,6 +23,7 @@ export default {
     app.component('ModuleIndex', ModuleIndex);
     app.component('StatusContent', StatusContent);
     app.component('TesterContent', TesterContent);
+    app.component('ApiOutline', ApiOutline);
 
     if (typeof window !== 'undefined') {
       router.onBeforeRouteChange = (to) => {
diff --git a/components/ApiOutline.vue b/components/ApiOutline.vue
new file mode 100644
index 0000000..8af6491
--- /dev/null
+++ b/components/ApiOutline.vue
@@ -0,0 +1,81 @@
+<script setup>
+import { useMutationObserver } from '@vueuse/core';
+import { onMounted, ref } from 'vue';
+
+const outline = ref(null);
+
+
+const onActiveChange = (mutations) => {
+  for (const { target, type, attributeName } of mutations) {
+    if (
+      type === 'attributes' &&
+      attributeName === 'class' &&
+      target.classList.contains('active') &&
+      target.classList.contains('outline-link')
+    ) {
+      target.scrollIntoView({ behavior: 'smooth', block: 'center' });
+    }
+  }
+};
+
+
+onMounted(() => {
+  outline.value = document.querySelector('.VPDocAsideOutline');
+});
+
+
+useMutationObserver(outline, onActiveChange, {
+  attributeFilter: ['class'],
+  subtree: true,
+});
+</script>
+
+<template>
+  <span class="api-outline-marker" />
+</template>
+
+<style>
+.api-outline-marker {
+  display: none;
+}
+
+.VPDoc:has(.api-outline-marker) .VPDocAsideOutline .outline-link + ul {
+  display: none;
+}
+
+.VPDoc:has(.api-outline-marker) .VPDocAsideOutline li:has(.outline-link.active) > ul,
+.VPDoc:has(.api-outline-marker) .VPDocAsideOutline li.expanded > ul {
+  display: block;
+}
+
+.VPDoc:has(.api-outline-marker) .VPDocAsideOutline .outline-link {
+  display: flex;
+  line-height: 28px;
+  position: relative;
+}
+
+.VPDoc:has(.api-outline-marker) .VPDocAsideOutline .outline-link::before {
+  content: '';
+  width: 15px;
+  flex-shrink: 0;
+}
+
+.VPDoc:has(.api-outline-marker) .VPDocAsideOutline li:has(> ul) > .outline-link::before {
+  width: 15px;
+  height: 30px;
+  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 20 20' fill='none' stroke='%230080ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='8 4 14 10 8 16'/%3E%3C/svg%3E");
+  background-repeat: no-repeat;
+  background-position: center;
+  cursor: pointer;
+  transition: transform 0.3s ease-in-out;
+}
+
+.VPDoc:has(.api-outline-marker) .VPDocAsideOutline li:has(> ul) > .outline-link {
+  color: var(--vp-c-brand-1);
+}
+
+.VPDoc:has(.api-outline-marker) .VPDocAsideOutline li:has(.outline-link.active) > .outline-link::before,
+.VPDoc:has(.api-outline-marker) .VPDocAsideOutline li.expanded > .outline-link::before {
+  transform: rotate(90deg);
+}
+</style>
diff --git a/components/CodeMirrorEditor.vue b/components/CodeMirrorEditor.vue
index 907cfbe..0dd8743 100644
--- a/components/CodeMirrorEditor.vue
+++ b/components/CodeMirrorEditor.vue
@@ -15,15 +15,14 @@ import { EditorView, basicSetup } from 'codemirror';
 import { useData } from 'vitepress';
 import { onBeforeUnmount, onMounted, ref, watch } from 'vue';
 
-const { errorLines, language, modelValue, readOnly } = defineProps({
+const { errorLines, language, readOnly } = defineProps({
   errorLines: { default: () => [], type: Array },
   language: { default: 'javascript', type: String },
-  modelValue: { default: '', type: String },
   readOnly: { default: false, type: Boolean },
 });
 
 
-const emit = defineEmits(['update:modelValue']);
+const data = defineModel({ default: '', type: String });
 
 
 const { isDark } = useData();
@@ -81,7 +80,7 @@ onMounted(() => {
     themeCompartment.of(getThemeExtension()),
     EditorView.updateListener.of((update) => {
       if (update.docChanged) {
-        emit('update:modelValue', update.state.doc.toString());
+        data.value = update.state.doc.toString();
       }
     }),
   ];
@@ -97,7 +96,7 @@ onMounted(() => {
 
   view = new EditorView({
     parent: editorContainer.value,
-    state: EditorState.create({ doc: modelValue, extensions }),
+    state: EditorState.create({ doc: data.value, extensions }),
   });
 
   if (readOnly && errorLines.length > 0) {
@@ -106,16 +105,13 @@ onMounted(() => {
 });
 
 
-watch(
-  () => modelValue,
-  (newValue) => {
-    if (view && newValue !== view.state.doc.toString()) {
-      view.dispatch({
-        changes: { from: 0, insert: newValue, to: view.state.doc.length },
-      });
-    }
-  },
-);
+watch(data, (newValue) => {
+  if (view && newValue !== view.state.doc.toString()) {
+    view.dispatch({
+      changes: { from: 0, insert: newValue, to: view.state.doc.length },
+    });
+  }
+});
 
 
 watch(
diff --git a/components/TesterContent.vue b/components/TesterContent.vue
index cc0d44a..0d99234 100644
--- a/components/TesterContent.vue
+++ b/components/TesterContent.vue
@@ -69,6 +69,7 @@
 </template>
 
 <script setup>
+import { useClipboard, useStorage } from '@vueuse/core';
 import { useRoute } from 'vitepress';
 import { onBeforeUnmount, onMounted, ref, watch } from 'vue';
 
@@ -97,8 +98,8 @@ const DEFAULT_VALIDATE = `//Insert data to validate here
 
 
 const route = useRoute();
-const schema = ref(DEFAULT_SCHEMA);
-const validate = ref(DEFAULT_VALIDATE);
+const schema = useStorage('joi-sandbox-schema', DEFAULT_SCHEMA);
+const validate = useStorage('joi-sandbox-validate', DEFAULT_VALIDATE);
 const result = ref('');
 const resultEditorContent = ref('');
 const errorDetails = ref([]);
@@ -109,7 +110,7 @@ const version = ref('');
 const joiInstance = ref(null);
 const isLoading = ref(false);
 const latestVersion = ref(joiInfo.versionsArray[0]);
-const isCopied = ref(false);
+const { copy, copied: isCopied } = useClipboard();
 const showResetConfirm = ref(false);
 
 
@@ -176,33 +177,12 @@ onMounted(async () => {
         validate.value = state.data;
       }
     } catch {}
-  } else {
-    // Check if we have saved state in localStorage
-    const savedSchema = localStorage.getItem('joi-sandbox-schema');
-    const savedValidate = localStorage.getItem('joi-sandbox-validate');
-    if (savedSchema !== null) {
-      schema.value = savedSchema;
-    }
-    if (savedValidate !== null) {
-      validate.value = savedValidate;
-    }
   }
 
   await loadJoi(v);
 });
 
 
-onBeforeUnmount(() => {
-  saveState();
-});
-
-
-const saveState = () => {
-  localStorage.setItem('joi-sandbox-schema', schema.value);
-  localStorage.setItem('joi-sandbox-validate', validate.value);
-};
-
-
 watch(
   () => route.path,
   async (newPath) => {
@@ -211,7 +191,6 @@ watch(
     if (testerMatch) {
       const v = testerMatch.at(1);
       if (v !== version.value) {
-        saveState();
         await loadJoi(v);
       }
     }
@@ -227,10 +206,6 @@ const onValidateClick = () => {
   }
 
 
-  // Save to localStorage whenever we validate
-  saveState();
-
-
   try {
     // oxlint-disable-next-line no-new-func
     const dataToValidate = new Function(`"use strict";return (${validate.value})`)();
@@ -291,8 +266,6 @@ const cancelReset = () => {
 
 const confirmReset = () => {
   showResetConfirm.value = false;
-  localStorage.removeItem('joi-sandbox-schema');
-  localStorage.removeItem('joi-sandbox-validate');
 
 
   schema.value = DEFAULT_SCHEMA;
@@ -307,10 +280,6 @@ const confirmReset = () => {
 
 
 const onShareClick = async () => {
-  // Also save to localStorage when sharing
-  saveState();
-
-
   const state = JSON.stringify({
     data: validate.value,
     schema: schema.value,
@@ -321,11 +290,7 @@ const onShareClick = async () => {
     const encoded = btoa(unescape(encodeURIComponent(state)));
     const url = new URL(window.location.href);
     url.hash = `share=${encoded}`;
-    await navigator.clipboard.writeText(url.toString());
-    isCopied.value = true;
-    setTimeout(() => {
-      isCopied.value = false;
-    }, 2000);
+    await copy(url.toString());
   } catch {}
 };
 </script>
diff --git a/docs/api/[version].md b/docs/api/[version].md
index 9f04c28..6c2902a 100644
--- a/docs/api/[version].md
+++ b/docs/api/[version].md
@@ -2,6 +2,8 @@
 title: API
 ---
 
+<ApiOutline />
+
 # API v{{ $params.fullVersion }}
 
 ### Installation
diff --git a/docs/module/[name]/api/[version].md b/docs/module/[name]/api/[version].md
index 25e3d60..a8dab94 100644
--- a/docs/module/[name]/api/[version].md
+++ b/docs/module/[name]/api/[version].md
@@ -2,6 +2,8 @@
 title: Module API
 ---
 
+<ApiOutline />
+
 # {{ $params.package }} API v{{ $params.fullVersion }}
 
 ::: code-group
diff --git a/docs/module/[name]/changelog.md b/docs/module/[name]/changelog.md
index e391b2f..f1ed787 100644
--- a/docs/module/[name]/changelog.md
+++ b/docs/module/[name]/changelog.md
@@ -2,6 +2,8 @@
 title: Module changelog
 ---
 
+<ApiOutline />
+
 # Changelog
 
 ::: v-pre
diff --git a/docs/resources/changelog.md b/docs/resources/changelog.md
index 6df6fff..ea3da10 100644
--- a/docs/resources/changelog.md
+++ b/docs/resources/changelog.md
@@ -2,6 +2,8 @@
 title: Changelog
 ---
 
+<ApiOutline />
+
 # Changelog
 
 ::: v-pre
diff --git a/package.json b/package.json
index 695bfd2..bc1677c 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,7 @@
     "@lezer/highlight": "^1.2.3",
     "@uiw/codemirror-theme-darcula": "^4.25.8",
     "@uiw/codemirror-theme-eclipse": "^4.25.8",
+    "@vueuse/core": "^14.2.1",
     "codemirror": "^6.0.2",
     "es-toolkit": "^1.45.1",
     "joi-17": "npm:joi@17.13.3",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 59f62d1..bdf9037 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -35,6 +35,9 @@ importers:
       '@uiw/codemirror-theme-eclipse':
         specifier: ^4.25.8
         version: 4.25.8(@codemirror/language@6.12.2)(@codemirror/state@6.6.0)(@codemirror/view@6.40.0)
+      '@vueuse/core':
+        specifier: ^14.2.1
+        version: 14.2.1(vue@3.5.30(typescript@5.9.3))
       codemirror:
         specifier: ^6.0.2
         version: 6.0.2