diff --git a/src/lib/js/constants.js b/src/lib/js/constants.js
index f5af954..84246cb 100644
--- a/src/lib/js/constants.js
+++ b/src/lib/js/constants.js
@@ -1,7 +1,7 @@
 import pkg from '../../../package.json' with { type: 'json' }
 import { uuid } from './common/utils/index.mjs'
 
-const isProd = import.meta.env?.PROD
+const { env, resolve } = import.meta
 
 const name = pkg.name
 export const version = pkg.version
@@ -13,9 +13,9 @@ export const POLYFILLS = [
   { name: 'mutationObserver', src: '//cdn.jsdelivr.net/npm/mutationobserver-shim/dist/mutationobserver.min.js' },
   { name: 'fetch', src: 'https://unpkg.com/unfetch/polyfill' },
 ]
-export const SVG_SPRITE_URL = isProd
+export const SVG_SPRITE_URL = env?.PROD
   ? `https://cdn.jsdelivr.net/npm/formeo@${version}/dist/${formeoSpriteId}.svg`
-  : `assets/img/${formeoSpriteId}.svg`
+  : resolve(`../../lib/icons/${formeoSpriteId}.svg`)
 export const FALLBACK_SVG_SPRITE_URL = `https://draggable.github.io/formeo/assets/img/${formeoSpriteId}.svg`
 export const CSS_URL = `https://cdn.jsdelivr.net/npm/formeo@${version}/dist/formeo.min.css`
 export const FALLBACK_CSS_URL = 'https://draggable.github.io/formeo/assets/css/formeo.min.css'
diff --git a/tools/copy-assets.mjs b/tools/copy-assets.mjs
new file mode 100644
index 0000000..73a0c9c
--- /dev/null
+++ b/tools/copy-assets.mjs
@@ -0,0 +1,61 @@
+// copyDir.mjs
+import { promises as fs } from 'node:fs';
+import { join, basename, resolve, dirname } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+const projectRoot = resolve(__dirname, '..');
+
+
+
+const targets = [
+  {
+    src: resolve(projectRoot, 'src/lib/icons/formeo-sprite.svg'),
+    dest: resolve(projectRoot, 'dist/demo/assets/img/'),
+  },
+  {
+    src: resolve(projectRoot, 'src/lib/icons/formeo-sprite.svg'),
+    dest: resolve(projectRoot, 'dist/'),
+  },
+  {
+    src: resolve(projectRoot, 'node_modules', '@draggable/formeo-languages/dist/lang/*'),
+    dest: resolve(projectRoot, 'dist/demo/assets/lang'),
+  },
+  {
+    src: resolve(projectRoot, 'dist/formeo.umd.js'),
+    dest: resolve(projectRoot, 'dist/demo/assets/js/'),
+    rename: 'formeo.min.js',
+  },
+  {
+    src: resolve(projectRoot, 'dist/formeo.umd.js'),
+    dest: resolve(projectRoot, 'dist/'),
+    rename: 'formeo.min.js',
+  },
+  {
+    src: resolve(projectRoot, 'dist/formeo.min.css'),
+    dest: resolve(projectRoot, 'dist/demo/assets/css/'),
+  },
+]
+
+async function copyFile(src, dest, rename = null) {
+  for await (const file of fs.glob(src)) {
+    const destPath = rename ? join(dest, rename) : join(dest, basename(file));
+    await fs.mkdir(dirname(destPath), { recursive: true });
+    await fs.copyFile(file, destPath);
+  }
+}
+
+// Entry point
+async function main() {
+  for (const target of targets) {
+    try {
+      await copyFile(target.src, target.dest, target.rename);
+      console.log(`Copied ${basename(target.src)} to ${target.dest}`);
+    } catch (error) {
+      console.error(`Error copying file: ${error.message}`);
+    }
+  }
+}
+
+main();