diff --git a/.gitignore b/.gitignore
index 97289ca..8681a87 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,10 +4,6 @@
 # node modules
 node_modules/
 
-# dist
-dist/package.json
-dist/README.md
-
 # roolup cache
 .rollup.cache/
 
diff --git a/dist/README.md b/dist/README.md
new file mode 100644
index 0000000..555e06d
--- /dev/null
+++ b/dist/README.md
@@ -0,0 +1,56 @@
+### A tool for download hls/m3u8 to mp4
+
+#### no longer depend on @ffmpeg/ffmpeg since version 2.0
+
+### online demo
+
+[online demo](https://code-app.netlify.app/hls2mp4/)
+
+### install
+
+```shell
+# npm
+npm install hls2mp4
+
+# yarn
+yarn add hls2mp4
+```
+
+### usage
+
+```js
+import Hls2Mp4 from "hls2mp4";
+
+const hls2mp4 = new Hls2Mp4({
+  /**
+   * max retry times while request data failed, default: 3
+  */
+  maxRetry?: number;
+  /**
+   * the concurrency for download ts segment, default: 10
+  */
+  tsDownloadConcurrency?: number;
+  /**
+   * the type of output file, can be mp4 or ts, default: mp4
+   */
+  outputType?: 'mp4' | 'ts';
+
+}, (type, progress) => {
+  // type = 0  => load FFmpeg
+  // type = 1  => parse m3u8
+  // type = 2  => downloading ts
+  // type = 3  => merge ts
+});
+
+const buffer = await hls2mp4.download('your m3u8 url')
+hls2mp4.saveToFile(buffer, 'test.mp4')
+```
+
+#### as script
+```html
+<script src="static/js/ffmpeg.min.js"></script>
+<script src="dist/hls2mp4.js"></script>
+<script>
+  const hls2mp4 = new Hls2Mp4({...})
+</script>
+```
diff --git a/dist/package.json b/dist/package.json
new file mode 100644
index 0000000..139b816
--- /dev/null
+++ b/dist/package.json
@@ -0,0 +1,42 @@
+{
+  "name": "hls2mp4",
+  "version": "2.0.5",
+  "description": "a tool for download hls/m3u8 to mp4",
+  "main": "index.js",
+  "types": "index.d.ts",
+  "repository": "https://github.com/icefee/hls2mp4",
+  "keywords": [
+    "ffmpeg",
+    "hls",
+    "m3u8"
+  ],
+  "author": "icefee@outlook.com",
+  "license": "MIT",
+  "dependencies": {
+    "aes-js": "^3.1.2"
+  },
+  "devDependencies": {
+    "@rollup/plugin-commonjs": "^25.0.0",
+    "@rollup/plugin-node-resolve": "^15.0.2",
+    "@rollup/plugin-typescript": "^11.1.0",
+    "@types/aes-js": "^3.1.1",
+    "@types/node": "^20.2.5",
+    "rollup": "^3.21.4",
+    "tslib": "^2.0.0",
+    "typescript": "^4.7.4"
+  },
+  "type": "module",
+  "homepage": "https://github.com/icefee/hls2mp4",
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}