diff --git a/.agents/skills/core-js/SKILL.md b/.agents/skills/core-js/SKILL.md
index 3b25525bf..2ada1f912 100644
--- a/.agents/skills/core-js/SKILL.md
+++ b/.agents/skills/core-js/SKILL.md
@@ -11,10 +11,12 @@ description: >-
 
 ## 1. Two entry points
 
-| Entry                | Ships as                           | Holds                                                                        |
-| -------------------- | ---------------------------------- | ---------------------------------------------------------------------------- |
-| `js/tabler.ts`       | `tabler.js` / `.esm.js` (+ `.min`) | plugin initialisers, the Bootstrap components, the `tabler` helper namespace |
-| `js/tabler-theme.ts` | `tabler-theme.js` (+ variants)     | the colour-mode/theme switcher only                                          |
+| Entry | Ships as | Holds |
+| --- | --- | --- |
+| `js/tabler.ts` | `tabler.js` (+ `.min`) | plugin initialisers, the Bootstrap components, the `tabler` helper exports |
+| `js/tabler-theme.ts` | `tabler-theme.js` (+ `.min`) | the colour-mode/theme switcher only |
+
+Both bundles are **ESM only** (Tabler 2.0, like Bootstrap v6): no UMD, no `window.tabler` global. `tabler.js` is loaded with `<script type="module">`; `tabler-theme.js` has no imports or exports once bundled, so it stays a classic blocking script.
 
 `tabler-theme.js` is loaded right after `<body>` and **not deferred**, so the chosen theme applies before the first paint. It stays tiny on purpose (bundlewatch: 1 kB raw, 800 B minified) — do not add anything to it that is not needed before paint.
 
@@ -68,13 +70,13 @@ pnpm --filter @tabler/core test:js:coverage
 
 ## 6. Build and budget
 
-`vite` builds each entry as a library in `es` + `umd` (`BASE_NAME` selects the entry), then terser produces the `.min` variants with source maps. Sizes are enforced:
+`vite` builds each entry as a library in `es` only (`BASE_NAME` selects the entry), then terser produces the `.min` variants with source maps. `core/dist/js/` holds 4 files + maps. Sizes are enforced:
 
-| File                      | Limit |
-| ------------------------- | ----- |
-| `dist/js/tabler.js`       | 64 kB |
-| `dist/js/tabler.min.js`   | 48 kB |
-| `dist/js/tabler-theme.js` | 1 kB  |
+| File | Limit |
+| --- | --- |
+| `dist/js/tabler.js` | 64 kB |
+| `dist/js/tabler.min.js` | 48 kB |
+| `dist/js/tabler-theme.js` | 1.3 kB |
 
 ```bash
 pnpm --filter @tabler/core build
diff --git a/.changeset/esm-only-distribution.md b/.changeset/esm-only-distribution.md
new file mode 100644
index 000000000..d704b8808
--- /dev/null
+++ b/.changeset/esm-only-distribution.md
@@ -0,0 +1,7 @@
+---
+"@tabler/core": major
+"@tabler/preview": patch
+"@tabler/docs": patch
+---
+
+Removed the UMD bundle and `window.tabler` global; `@tabler/core` ships ESM only, loaded with `<script type="module">`.
diff --git a/README.md b/README.md
index 76530d051..b37389778 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ Load Tabler from the CDN and start building:
   <body>
     <h1>Hello, Tabler!</h1>
     <button class="btn btn-primary">Primary button</button>
-    <script src="https://cdn.jsdelivr.net/npm/@tabler/core@latest/dist/js/tabler.min.js"></script>
+    <script type="module" src="https://cdn.jsdelivr.net/npm/@tabler/core@latest/dist/js/tabler.min.js"></script>
   </body>
 </html>
 ```
@@ -106,7 +106,7 @@ The `@tabler/core` package contains compiled and minified CSS and JavaScript, th
 ├── dist/
 │   ├── css/       tabler.css and the optional stylesheets (flags, marketing, payments, socials,
 │   │              themes, vendors), each with .min and .rtl versions
-│   ├── js/        tabler.js and tabler.esm.js, plus the standalone tabler-theme.js
+│   ├── js/        tabler.js (ESM, load with <script type="module">), plus the standalone tabler-theme.js
 │   ├── libs/      bundled plugins: ApexCharts, Tom Select, Vanilla Calendar Pro, FullCalendar and others
 │   ├── types/     TypeScript declarations
 │   ├── fonts/
diff --git a/core/.build/vite.config.mts b/core/.build/vite.config.mts
index f11c645bd..5bf201edd 100644
--- a/core/.build/vite.config.mts
+++ b/core/.build/vite.config.mts
@@ -18,11 +18,9 @@ const entry = `${entryPath}.ts`
 export default createViteConfig({
   entry: entry,
   name: libraryName,
-  fileName: (format) => {
-    const esmSuffix = format === 'es' ? '.esm' : ''
-    return `${baseName}${esmSuffix}.js`
-  },
-  formats: ['es', 'umd'],
+  // ESM only (Tabler 2.0, like Bootstrap v6): one artifact per entry, no `.esm` suffix.
+  fileName: () => `${baseName}.js`,
+  formats: ['es'],
   outDir: path.resolve(__dirname, '../dist/js'),
   banner: bannerText,
   minify: false,
diff --git a/core/README.md b/core/README.md
index bfd0b19e3..474684c21 100644
--- a/core/README.md
+++ b/core/README.md
@@ -39,7 +39,7 @@ All files in the package are also available over a CDN:
 
 ```html
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@tabler/core@latest/dist/css/tabler.min.css" />
-<script src="https://cdn.jsdelivr.net/npm/@tabler/core@latest/dist/js/tabler.min.js"></script>
+<script type="module" src="https://cdn.jsdelivr.net/npm/@tabler/core@latest/dist/js/tabler.min.js"></script>
 ```
 
 If you don't use a package manager, [download the latest release](https://github.com/tabler/tabler/releases) as a ZIP archive.
@@ -55,7 +55,8 @@ import '@tabler/core/dist/css/tabler.min.css'
 import '@tabler/core/dist/js/tabler.min.js'
 ```
 
-There's also an ES module build with named exports, which is handy when you create components from code:
+The bundle is ESM only — in a plain HTML page load it with `<script type="module">`. It also has
+named exports, which is handy when you create components from code:
 
 ```js
 import { Tooltip } from '@tabler/core'
@@ -104,7 +105,7 @@ The third-party libraries used by the demo pages (ApexCharts, Tom Select, Vanill
 @tabler/core/
 ├── dist/
 │   ├── css/       tabler.css and the optional stylesheets, each with .min and .rtl versions
-│   ├── js/        tabler.js and tabler.esm.js, plus the standalone tabler-theme.js
+│   ├── js/        tabler.js (ESM, load with <script type="module">), plus the standalone tabler-theme.js
 │   ├── libs/      bundled third-party plugins
 │   ├── types/     TypeScript declarations
 │   ├── fonts/
diff --git a/core/js/tabler.ts b/core/js/tabler.ts
index ef8eadf58..c47075ba2 100644
--- a/core/js/tabler.ts
+++ b/core/js/tabler.ts
@@ -32,5 +32,5 @@ export { default as Sparkline } from './src/sparkline'
 export { default as Strength } from './src/strength'
 export { default as SwitchIcon } from './src/switch-icon'
 
-// deprecated(2.0): the `tabler` namespace with `getColor()`, `hexToRgba()` and `prefix`
-export * as tabler from './src/deprecated'
+// Tabler's own helpers as named exports (prefix, hexToRgba, getColor)
+export * from './src/tabler'
diff --git a/core/package.json b/core/package.json
index b2b097125..60c6653c3 100644
--- a/core/package.json
+++ b/core/package.json
@@ -3,6 +3,7 @@
   "version": "1.6.1",
   "description": "Premium and Open Source dashboard template with responsive and high quality UI.",
   "homepage": "https://tabler.io",
+  "type": "module",
   "scripts": {
     "dev": "pnpm run watch",
     "dev:prepare": "pnpm run clean && pnpm run copy && concurrently \"pnpm run css:dev\" \"pnpm run js:build\"",
@@ -21,8 +22,8 @@
     "js:build:theme": "cross-env BASE_NAME=tabler-theme vite build --config .build/vite.config.mts",
     "js:build:standalone": "cross-env BASE_NAME=tabler vite build --config .build/vite.config.mts",
     "js:min": "concurrently \"pnpm run js:min:standalone\" \"pnpm run js:min:theme\"",
-    "js:min:standalone": "concurrently \"terser dist/js/tabler.js --compress passes=2,ecma=2020 --ecma 2020 --mangle --source-map \\\"content=dist/js/tabler.js.map,filename=dist/js/tabler.min.js.map,url=tabler.min.js.map\\\" -o dist/js/tabler.min.js\" \"terser dist/js/tabler.esm.js --module --compress passes=2,ecma=2020 --ecma 2020 --mangle --source-map \\\"content=dist/js/tabler.esm.js.map,filename=dist/js/tabler.esm.min.js.map,url=tabler.esm.min.js.map\\\" -o dist/js/tabler.esm.min.js\"",
-    "js:min:theme": "concurrently \"terser dist/js/tabler-theme.js --compress passes=2,ecma=2020 --ecma 2020 --mangle --source-map \\\"content=dist/js/tabler-theme.js.map,filename=dist/js/tabler-theme.min.js.map,url=tabler-theme.min.js.map\\\" -o dist/js/tabler-theme.min.js\" \"terser dist/js/tabler-theme.esm.js --module --compress passes=2,ecma=2020 --ecma 2020 --mangle --source-map \\\"content=dist/js/tabler-theme.esm.js.map,filename=dist/js/tabler-theme.esm.min.js.map,url=tabler-theme.esm.min.js.map\\\" -o dist/js/tabler-theme.esm.min.js\"",
+    "js:min:standalone": "terser dist/js/tabler.js --module --compress passes=2,ecma=2020 --ecma 2020 --mangle --source-map \"content=dist/js/tabler.js.map,filename=dist/js/tabler.min.js.map,url=tabler.min.js.map\" -o dist/js/tabler.min.js",
+    "js:min:theme": "terser dist/js/tabler-theme.js --module --compress passes=2,ecma=2020 --ecma 2020 --mangle --source-map \"content=dist/js/tabler-theme.js.map,filename=dist/js/tabler-theme.min.js.map,url=tabler-theme.min.js.map\" -o dist/js/tabler-theme.min.js",
     "copy": "concurrently \"pnpm run copy:img\" \"pnpm run copy:libs\"",
     "copy:img": "tsx .build/copy-img.ts",
     "copy:libs": "tsx .build/copy-libs.ts",
@@ -75,11 +76,29 @@
   ],
   "style": "dist/css/tabler.css",
   "sass": "scss/tabler.scss",
-  "unpkg": "dist/js/tabler.min.js",
-  "umd:main": "dist/js/tabler.min.js",
-  "module": "dist/js/tabler.esm.js",
   "main": "dist/js/tabler.js",
+  "module": "dist/js/tabler.js",
   "types": "dist/types/tabler.d.ts",
+  "unpkg": "dist/js/tabler.min.js",
+  "jsdelivr": "dist/js/tabler.min.js",
+  "sideEffects": [
+    "./js/**",
+    "./dist/js/tabler.js",
+    "./dist/js/tabler-theme.js"
+  ],
+  "exports": {
+    ".": {
+      "types": "./dist/types/tabler.d.ts",
+      "import": "./dist/js/tabler.js"
+    },
+    "./theme": "./dist/js/tabler-theme.js",
+    "./package.json": "./package.json",
+    "./libs.json": "./libs.json",
+    "./scss/*": "./scss/*",
+    "./js/*.ts": "./js/*.ts",
+    "./js/*": "./js/*.ts",
+    "./dist/*": "./dist/*"
+  },
   "bundlewatch": {
     "files": [
       {
@@ -218,29 +237,13 @@
         "path": "./dist/js/tabler.min.js",
         "maxSize": "40 kB"
       },
-      {
-        "path": "./dist/js/tabler.esm.js",
-        "maxSize": "58 kB"
-      },
-      {
-        "path": "./dist/js/tabler.esm.min.js",
-        "maxSize": "40 kB"
-      },
       {
         "path": "./dist/js/tabler-theme.js",
         "maxSize": "1.3 kB"
       },
-      {
-        "path": "./dist/js/tabler-theme.esm.js",
-        "maxSize": "1.3 kB"
-      },
       {
         "path": "./dist/js/tabler-theme.min.js",
         "maxSize": "800 B"
-      },
-      {
-        "path": "./dist/js/tabler-theme.esm.min.js",
-        "maxSize": "800 B"
       }
     ]
   },
diff --git a/docs/layouts/DocsLayout.astro b/docs/layouts/DocsLayout.astro
index 01f980278..d929fa69e 100644
--- a/docs/layouts/DocsLayout.astro
+++ b/docs/layouts/DocsLayout.astro
@@ -520,7 +520,7 @@ const relatedPages = await Promise.all(
 
 
 		<!-- BEGIN GLOBAL MANDATORY SCRIPTS -->
-		<script is:inline src="/dist/js/tabler.js" defer></script>
+		<script is:inline type="module" src="/dist/js/tabler.js"></script>
 		<!-- END GLOBAL MANDATORY SCRIPTS -->
 
 		<PageScripts />
diff --git a/screenshots/layouts/ScreenshotAppLayout.astro b/screenshots/layouts/ScreenshotAppLayout.astro
index 0792e4847..1426656e9 100644
--- a/screenshots/layouts/ScreenshotAppLayout.astro
+++ b/screenshots/layouts/ScreenshotAppLayout.astro
@@ -177,7 +177,11 @@ const libJsFiles = pageLibEntries.flatMap(([, lib]) => (lib.js ?? []).map((file)
     </nav>
 
     {libJsFiles.map((src) => <script is:inline src={src} defer />)}
-    <script is:inline src={`/dist/js/tabler${min}.js`} defer></script>
+    <!-- ESM-only build: load as a module and re-expose the namespace as a local
+    shim so the capture pages' window.tabler.Dropdown/Offcanvas calls keep working.
+    A static import (not import()) so window.tabler is set before DOMContentLoaded,
+    the way the old classic script guaranteed. -->
+    <script is:inline type="module" set:html={`import * as tabler from '/dist/js/tabler${min}.js';\nwindow.tabler = tabler;`} />
 
     <PageScripts />
 
diff --git a/screenshots/layouts/ScreenshotLayout.astro b/screenshots/layouts/ScreenshotLayout.astro
index bcf3e618e..2ca7f5583 100644
--- a/screenshots/layouts/ScreenshotLayout.astro
+++ b/screenshots/layouts/ScreenshotLayout.astro
@@ -168,7 +168,11 @@ const libJsFiles = pageLibEntries.flatMap(([, lib]) => (lib.js ?? []).map((file)
     </div>
 
     {libJsFiles.map((src) => <script is:inline src={src} defer />)}
-    <script is:inline src={`/dist/js/tabler${min}.js`} defer></script>
+    <!-- ESM-only build: load as a module and re-expose the namespace as a local
+    shim so the capture pages' window.tabler.Dropdown/Offcanvas calls keep working.
+    A static import (not import()) so window.tabler is set before DOMContentLoaded,
+    the way the old classic script guaranteed. -->
+    <script is:inline type="module" set:html={`import * as tabler from '/dist/js/tabler${min}.js';\nwindow.tabler = tabler;`} />
 
     <!-- components that render via CaptureScript (e.g. Chart) queue their init script
     into shared/lib/page-scripts instead of inlining it where used; this drains it. -->
diff --git a/shared/components/navbar/NavbarSideNotifications.astro b/shared/components/navbar/NavbarSideNotifications.astro
index 9d56eb382..563683634 100644
--- a/shared/components/navbar/NavbarSideNotifications.astro
+++ b/shared/components/navbar/NavbarSideNotifications.astro
@@ -104,7 +104,9 @@ import CaptureScript from '../CaptureScript.astro'
     for (const close of document.querySelectorAll('[data-navbar-notifications-close]')) {
       close.onclick = () => {
         const toggle = close.closest('.dropdown').querySelector('[data-bs-toggle="dropdown"]')
-        window.tabler.bootstrap.Dropdown.getOrCreateInstance(toggle).hide()
+        // ESM-only build: no window.tabler global. Close via Bootstrap's own
+        // data-API — clicking an open toggle dismisses the dropdown.
+        if (toggle && toggle.getAttribute('aria-expanded') === 'true') toggle.click()
       }
     }
   </script>
diff --git a/shared/layouts/BaseLayout.astro b/shared/layouts/BaseLayout.astro
index 4dba0eb35..8d5f0afce 100644
--- a/shared/layouts/BaseLayout.astro
+++ b/shared/layouts/BaseLayout.astro
@@ -135,7 +135,7 @@ const libJsFiles = (head: boolean) => pageLibEntries.filter(([, lib]) => Boolean
     }
 
     <!-- BEGIN GLOBAL MANDATORY SCRIPTS -->
-    <script is:inline src={`${base}/dist/js/tabler${min}.js`} defer></script>
+    <script is:inline type="module" src={`${base}/dist/js/tabler${min}.js`}></script>
     <!-- END GLOBAL MANDATORY SCRIPTS -->
 
     <PageScripts />