diff --git a/aklive2d.js b/aklive2d.js
index 9473fbb..1a76456 100644
--- a/aklive2d.js
+++ b/aklive2d.js
@@ -23,17 +23,12 @@ async function main() {
   const op = process.argv[2]
   let OPERATOR_NAMES = process.argv.slice(3);
 
-  const background = new Background()
-  await background.process()
-  const backgrounds = ['operator_bg.png', ...background.files]
   const charwordTable = new CharwordTable()
 
-  directory()
-
   /**
    * Skip all, no need for OPERATOR_NAME
    * build-all: build all assets
-   * directory: build directory.json
+   * directory: build directory
    */
   switch (op) {
     case 'directory':
@@ -45,6 +40,10 @@ async function main() {
         OPERATOR_NAMES.push(key)
       }
       break
+    case 'preview':
+      assert(OPERATOR_NAMES.length !== 0, 'Please set the operator name.')
+      fork(path.join(__projetRoot, 'vite.config.js'), [op, OPERATOR_NAMES])
+      return
     case 'charword':
       await charwordTable.process()
       process.exit(0)
@@ -54,6 +53,12 @@ async function main() {
 
   assert(OPERATOR_NAMES.length !== 0, 'Please set the operator name.')
 
+  const background = new Background()
+  await background.process()
+  const backgrounds = ['operator_bg.png', ...background.files]
+
+  directory()
+
   for (const OPERATOR_NAME of OPERATOR_NAMES) {
     const OPERATOR_SOURCE_FOLDER = path.join(__projetRoot, __config.folder.operator)
     const OPERATOR_RELEASE_FOLDER = path.join(__projetRoot, __config.folder.release, OPERATOR_NAME)
diff --git a/package.json b/package.json
index e043692..7d7ac74 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
     "dev": "node aklive2d dev",
     "build": "node aklive2d build",
     "build-all": "node aklive2d build-all",
+    "preview": "node aklive2d preview",
     "init": "node aklive2d init",
     "readme": "node aklive2d readme",
     "directory": "node aklive2d directory",
diff --git a/vite.config.js b/vite.config.js
index 347d4d9..9f10bb0 100644
--- a/vite.config.js
+++ b/vite.config.js
@@ -1,16 +1,27 @@
 import path from 'path'
 import { fileURLToPath } from 'url'
-import { defineConfig, loadEnv } from 'vite'
+import { defineConfig } from 'vite'
 import assert from 'assert'
 import react from '@vitejs/plugin-react-swc'
 import getConfig from './libs/config.js'
+import { rmdir } from './libs/file.js'
 
 global.__projetRoot = path.dirname(fileURLToPath(import.meta.url))
 
 class ViteRunner {
   #globalConfig = getConfig()
   #mode
-  #baseViteConfig = {}
+  #baseViteConfig = {
+    configFile: false,
+    base: "",
+    server: {
+      host: '0.0.0.0',
+    },
+    build: {
+      emptyOutDir: false,
+      chunkSizeWarningLimit: 10000,
+    },
+  }
 
   config() {
     let result;
@@ -19,10 +30,16 @@ class ViteRunner {
     switch (this.#mode) {
       case 'directory':
         result = this.directory()
+        const op = temp[2] || process.argv[3]
+        if (op !== 'preview') {
+          rmdir(path.resolve(__projetRoot, this.#globalConfig.folder.release, "_directory"))
+          rmdir(path.resolve(__projetRoot, this.#globalConfig.folder.release, "index.html"))
+        }
         break
       case 'dev':
       case 'build':
       case 'build-all':
+      case 'preview':
         result = this.operator()
         break
       default:
@@ -41,6 +58,9 @@ class ViteRunner {
       case 'build-all':
         this.#build(viteConfig)
         break
+      case 'preview':
+        this.#preview(viteConfig)
+        break
       default:
         return
     }
@@ -66,18 +86,25 @@ class ViteRunner {
     })()
   }
 
+  #preview(viteConfig) {
+    ; (async () => {
+      const { preview } = await import('vite')
+      const previewServer = await preview({
+        ...viteConfig,
+      })
+
+      previewServer.printUrls()
+    })()
+  }
+
   operator() {
     const operatorName = process.env.O || process.argv[3]
     assert(operatorName, 'Please set the operator name by using environment variable O.')
     return {
-      configFile: false,
-      base: "",
+      ...this.#baseViteConfig,
       envDir: path.join(__projetRoot, this.#globalConfig.folder.operator, operatorName),
       publicDir: path.resolve(__projetRoot, this.#globalConfig.folder.release, operatorName),
       root: path.resolve(__projetRoot),
-      server: {
-        host: '0.0.0.0',
-      },
       resolve: {
         alias: {
           '@': path.resolve(__projetRoot, './src'),
@@ -85,9 +112,8 @@ class ViteRunner {
         },
       },
       build: {
+        ...this.#baseViteConfig.build,
         outDir: path.resolve(__projetRoot, this.#globalConfig.folder.release, operatorName),
-        emptyOutDir: false,
-        chunkSizeWarningLimit: 10000,
       },
     }
   }
@@ -112,9 +138,9 @@ class ViteRunner {
         },
       },
       build: {
+        ...this.#baseViteConfig.build,
         outDir: path.resolve(__projetRoot, this.#globalConfig.folder.release),
-        emptyOutDir: false,
-        chunkSizeWarningLimit: 10000,
+        assetsDir: '_directory',
         rollupOptions: {
           output: {
             manualChunks: {