diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..e245f1a
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,44 @@
+name: build
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  packages: write
+  contents: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        targets:
+          - x86_64-unknown-linux-gnu
+          - aarch64-unknown-linux-gnu
+          - x86_64-pc-windows-msvc
+          - x86_64-apple-darwin
+          - aarch64-apple-darwin
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Deno
+        uses: denoland/setup-deno@v2
+        with:
+          deno-version: v2.x
+
+      - name: Build
+        run: deno compile --target ${{matrix.targets}} --allow-write --allow-net --allow-read --include worker.ts main.ts
+
+      - name: Create Release and Upload Release Asset
+        uses: softprops/action-gh-release@v1
+        with:
+          tag_name: ${{ github.ref }}
+          name: Fast Down ${{ github.ref }}
+          body: 修复了一些已知问题
+          draft: false
+          prerelease: false
+          files: |
+            fast-down
+            fast-down.exe
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..17aff5b
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,28 @@
+name: build
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - "docs/**"
+      - "README.md"
+  pull_request:
+    paths-ignore:
+      - "docs/**"
+      - "README.md"
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Deno
+        uses: denoland/setup-deno@v2
+        with:
+          deno-version: v2.x
+
+      - name: Test
+        run: deno test --allow-write --allow-net --allow-read
diff --git a/deno.json b/deno.json
index b206dc5..c366228 100644
--- a/deno.json
+++ b/deno.json
@@ -1,6 +1,6 @@
 {
   "tasks": {
-    "build": "deno compile --allow-write --allow-net --allow-read --include worker.ts main.ts "
+    "build": "deno compile --allow-write --allow-net --allow-read --include worker.ts main.ts"
   },
   "compilerOptions": {
     "lib": ["deno.window", "deno.worker"]
diff --git a/main.ts b/main.ts
index 7ba9e30..a7f5846 100644
--- a/main.ts
+++ b/main.ts
@@ -1,12 +1,12 @@
 import { dirname, join, basename } from "jsr:@std/path";
 import { Mutex } from "npm:async-mutex";
-import { exec } from "./workerpool.ts";
+import { downloadChunk } from "./workerpool.ts";
 
 export async function download(
   url: string,
   filename: string,
   threads: number,
-  chunkSize = 10 * 1024 * 1024,
+  chunkSize = 5 * 1024 * 1024,
   headers: HeadersInit = {}
 ) {
   async function writeFile(buf: ArrayBuffer, pos: number) {
@@ -44,14 +44,13 @@ export async function download(
     const contentLength = await getContentLength();
     const chunkCount = Math.ceil(contentLength / chunkSize);
     const chunks: Chunk[] = Array.from({ length: chunkCount }, (_, i) => ({
-      url,
       start: i * chunkSize,
       end: Math.min((i + 1) * chunkSize, contentLength) - 1,
-      headers,
     }));
-    await exec<Chunk, ArrayBuffer>(
+    await downloadChunk<Chunk, ArrayBuffer>(
       threads,
-      () => new Worker(import.meta.resolve("./worker.ts"), { type: "module" }),
+      url,
+      headers,
       chunks,
       async (i) => {
         await writeFile(i.data, i.origin.start);
@@ -66,10 +65,8 @@ export async function download(
 }
 
 export interface Chunk {
-  url: string;
   start: number;
   end: number;
-  headers: HeadersInit;
 }
 
 if (import.meta.main) {
diff --git a/main_test.ts b/main_test.ts
index f020a89..7262909 100644
--- a/main_test.ts
+++ b/main_test.ts
@@ -1,9 +1,8 @@
 import { crypto } from "jsr:@std/crypto";
-import { download } from "./main.ts";
-import { join } from "jsr:@std/path/join";
-import { basename } from "jsr:@std/path/basename";
+import { join, basename } from "jsr:@std/path";
 import { encodeHex } from "jsr:@std/encoding/hex";
 import { assertEquals } from "jsr:@std/assert";
+import { download } from "./main.ts";
 
 Deno.test("Download ISO file test", async () => {
   const url =
diff --git a/worker.ts b/worker.ts
index 5c6feba..8b01cb8 100644
--- a/worker.ts
+++ b/worker.ts
@@ -1,13 +1,20 @@
 import type { Chunk } from "./main.ts";
 
-addEventListener("message", async ({ data }: MessageEvent<Chunk[]>) => {
-  for (const item of data) {
-    const r = await fetch(item.url, {
-      headers: { Range: `bytes=${item.start}-${item.end}` },
+interface EventData {
+  url: string;
+  headers: HeadersInit;
+  chunks: Chunk[];
+}
+
+addEventListener("message", async ({ data }: MessageEvent<EventData>) => {
+  for (const item of data.chunks) {
+    const r = await fetch(data.url, {
+      headers: {
+        ...data.headers,
+        Range: `bytes=${item.start}-${item.end}`,
+      },
     });
-    if (r.status !== 206) {
-      throw new Error(`Invalid status code ${r.status}"}`);
-    }
+    if (r.status !== 206) throw new Error(`Invalid status code ${r.status}"}`);
     const buf = await r.arrayBuffer();
     self.postMessage(buf, [buf]);
   }
diff --git a/workerpool.ts b/workerpool.ts
index eff15a8..738ca03 100644
--- a/workerpool.ts
+++ b/workerpool.ts
@@ -1,13 +1,16 @@
 // deno-lint-ignore-file ban-ts-comment
-export function exec<T, R>(
+export function downloadChunk<T, R>(
   threadCount: number,
-  workerFactory: () => Worker,
+  url: string,
+  headers: HeadersInit,
   data: T[],
   onProgress: (data: { origin: T; data: R; index: number }) => void,
   maxRetries: number = 3
 ) {
   if (data.length < 1) return Promise.resolve([]);
   if (threadCount < 1) throw new Error("threadCount must be greater than 0");
+  const workerFactory = () =>
+    new Worker(import.meta.resolve("./worker.ts"), { type: "module" });
   return new Promise<void>((resolve, reject) => {
     const baseChunkCount = Math.floor(data.length / threadCount);
     const remainingChunks = data.length % threadCount;
@@ -83,9 +86,11 @@ export function exec<T, R>(
             splitPoint;
         printWorkerData(workerData, i);
         printWorkerData(targetWorker, targetWorkerIndex);
-        workerData.worker.postMessage(
-          data.slice(splitPoint, workerData.endChunk)
-        );
+        workerData.worker.postMessage({
+          url,
+          headers,
+          chunks: data.slice(splitPoint, workerData.endChunk),
+        });
       };
       const errorHandel = (err: ErrorEvent) => {
         if (workerData.retryCount >= maxRetries) {
@@ -97,13 +102,19 @@ export function exec<T, R>(
         workerData.retryCount++;
         workerData.stolen = false;
         printWorkerData(workerData, i, "try: ");
-        workerData.worker.postMessage(
-          data.slice(workerData.currentChunk, workerData.endChunk)
-        );
+        workerData.worker.postMessage({
+          url,
+          headers,
+          chunks: data.slice(workerData.currentChunk, workerData.endChunk),
+        });
       };
       workerData.worker.addEventListener("message", messageHandle);
       workerData.worker.addEventListener("error", errorHandel);
-      workerData.worker.postMessage(data.slice(startChunk, endChunk));
+      workerData.worker.postMessage({
+        url,
+        headers,
+        chunks: data.slice(startChunk, endChunk),
+      });
     }
   });
 }