diff --git a/package.json b/package.json
index 4c09a63..177d0e6 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
   "author": "Genie",
   "license": "MIT",
   "scripts": {
-    "build:wasm": "bash scripts/build-openssl-wasm.sh"
+    "build:wasm": "bash scripts/build-openssl-wasm.sh",
+    "setup": "bash scripts/setup.sh"
   }
 }
\ No newline at end of file
diff --git a/scripts/setup.sh b/scripts/setup.sh
new file mode 100644
index 0000000..dd71d34
--- /dev/null
+++ b/scripts/setup.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Automatic project setup script for WebOpenSSL.
+# - Builds the minified UMD bundle at dist/webopenssl.min.js using esbuild (via npx)
+# - Optionally builds the OpenSSL WASM provider (pass --with-wasm)
+#
+# Usage:
+#   bash scripts/setup.sh
+#   bash scripts/setup.sh --with-wasm    # also builds the WASM provider
+#
+# Requirements:
+# - Node.js >= 16 with npm
+# - Bash, curl (for optional WASM build path)
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+DIST_DIR="${ROOT}/dist"
+WITH_WASM=0
+
+for arg in "$@"; do
+  case "$arg" in
+    --with-wasm) WITH_WASM=1 ;;
+    *) echo "Unknown argument: $arg" >&2; exit 1 ;;
+  esac
+done
+
+function need_cmd() {
+  command -v "$1" >/dev/null 2>&1 || { echo "Missing dependency: $1" >&2; exit 1; }
+}
+
+echo "==> Checking prerequisites..."
+need_cmd node
+need_cmd npm
+need_cmd npx
+
+mkdir -p "${DIST_DIR}"
+
+echo "==> Building UMD bundle (dist/webopenssl.min.js) with esbuild..."
+# Use npx to avoid editing package.json dependencies. This fetches esbuild if not cached.
+npx --yes esbuild "${ROOT}/src/index.js" \
+  --bundle \
+  --minify \
+  --platform=browser \
+  --format=iife \
+  --global-name=WebOpenSSL \
+  --outfile="${DIST_DIR}/webopenssl.min.js"
+
+echo "==> Bundle built at: ${DIST_DIR}/webopenssl.min.js"
+
+if [ "${WITH_WASM}" -eq 1 ]; then
+  echo "==> Building OpenSSL WASM provider..."
+  bash "${ROOT}/scripts/build-openssl-wasm.sh"
+else
+  echo "==> Skipping WASM build (pass --with-wasm to enable)"
+fi
+
+echo "==> Setup complete."
\ No newline at end of file