diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..e761c31
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,42 @@
+name: Build and test
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - uses: pnpm/action-setup@v2
+        with:
+          version: 8
+      - name: Prepare emscripten
+        run: node ./scripts/install-emscripten.mjs
+      - name: Prepare dependencies
+        run: |
+          pnpm install
+      - name: Run build wasm
+        shell: bash
+        run: |
+          source ./emsdk/emsdk_env.sh
+          pnpm run build:js
+        env:
+          EMSCRIPTEN_ROOT: ${{ github.workspace }}/emsdk
+          CC: clang
+          CXX: clang++
+      - name: Run test wasm (Wasm)
+        run: |
+          pnpx playwright install-deps
+          pnpx playwright install
+          pnpm run test:js
+        env:
+          TEST_WEBKIT: 1
+      - name: Run build & tests (C++)
+        run: |
+          pnpm run build:native
+          pnpm run test:native
+        env:
+          CC: clang
+          CXX: clang++
diff --git a/README.md b/README.md
index faaf5ad..5327323 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,9 @@
 # elheif
 
-A wasm heic image encoder and decoder library compiled from [libheif](https://github.com/strukturag/libheif), [libde265](https://github.com/strukturag/libde265) and kvazaar. The library is just a wrapper of `libheif` and compiled to WASM using Emscripten
+![Main](https://github.com/hpp2334/elheif/actions/workflows/main.yml/badge.svg)
+[![npm version](https://badge.fury.io/js/elheif.svg)](https://badge.fury.io/js/elheif)
+
+A wasm heic image encoder and decoder library compiled from [libheif](https://github.com/strukturag/libheif), [libde265](https://github.com/strukturag/libde265) and kvazaar. The library is just a wrapper of `libheif` and compiled to WASM using Emscripten.
 
 ## API
 
diff --git a/core/CMakeLists.txt b/core/CMakeLists.txt
index 5f4927b..75f77e0 100644
--- a/core/CMakeLists.txt
+++ b/core/CMakeLists.txt
@@ -5,6 +5,7 @@ include(ExternalProject)
 
 option(EMSCRIPTEN "Build to empscripten")
 
+
 set(EXTRA_CXX_FLAGS "-D__EMSCRIPTEN_STANDALONE_WASM__=1")
 # set(EXTRA_CXX_FLAGS "-D__EMSCRIPTEN_STANDALONE_WASM__=1 -pthread")
 
@@ -50,7 +51,7 @@ ExternalProject_Add(
   SOURCE_DIR        ${CMAKE_BINARY_DIR}/libheif-src
   BINARY_DIR        ${CMAKE_BINARY_DIR}/libheif-build
   TEST_COMMAND      ""
-  CMAKE_ARGS        -DWITH_KVAZAAR=ON -DWITH_EXAMPLES=OFF -DENABLE_MULTITHREADING_SUPPORT=OFF -DBUILD_TESTING=OFF -DBUILD_SHARED_LIBS=OFF -DLIBDE265_INCLUDE_DIR=${LIBDE265_INCLUDE_DIR} -DLIBDE265_LIBRARY=${LIBDE265_LIBRARY} -DKVAZAAR_INCLUDE_DIR=${KVAZAAR_INCLUDE_DIR} -DKVAZAAR_LIBRARY=${KVAZAAR_LIBRARY} ${EXTERNAL_PROJECT_EXTRA_CMAKE_ARGS}
+  CMAKE_ARGS        -DWITH_KVAZAAR=ON -DWITH_GDK_PIXBUF=OFF -DWITH_EXAMPLES=OFF -DENABLE_MULTITHREADING_SUPPORT=OFF -DBUILD_TESTING=OFF -DBUILD_SHARED_LIBS=OFF -DLIBDE265_INCLUDE_DIR=${LIBDE265_INCLUDE_DIR} -DLIBDE265_LIBRARY=${LIBDE265_LIBRARY} -DKVAZAAR_INCLUDE_DIR=${KVAZAAR_INCLUDE_DIR} -DKVAZAAR_LIBRARY=${KVAZAAR_LIBRARY} ${EXTERNAL_PROJECT_EXTRA_CMAKE_ARGS}
 )
 
 set(CMAKE_CXX_STANDARD 17)
diff --git a/scripts/install-emscripten.mjs b/scripts/install-emscripten.mjs
new file mode 100644
index 0000000..3fcdd43
--- /dev/null
+++ b/scripts/install-emscripten.mjs
@@ -0,0 +1,20 @@
+import { execSync } from "child_process";
+import * as path from 'path'
+
+const EMSDK_VERSION = '3.1.60'
+
+const ROOT = path.resolve(import.meta.dirname, '../')
+const EMSDK_ROOT = path.resolve(ROOT, './emsdk')
+
+execSync('git clone https://github.com/emscripten-core/emsdk.git', {
+    stdio: 'inherit',
+    cwd: ROOT,
+})
+execSync(`./emsdk install ${EMSDK_VERSION}`, {
+    stdio: 'inherit',
+    cwd: EMSDK_ROOT,
+})
+execSync(`./emsdk activate ${EMSDK_VERSION}`, {
+    stdio: 'inherit',
+    cwd: EMSDK_ROOT,
+})
\ No newline at end of file
diff --git a/tests/test.cpp b/tests/test.cpp
index 860e883..d8a75f3 100644
--- a/tests/test.cpp
+++ b/tests/test.cpp
@@ -47,5 +47,10 @@ TEST(HeifTest, Encode) {
 
   // Expect equality.
   EXPECT_EQ(encoded.err, "");
-  EXPECT_EQ(encoded.data.size(), 110151);
+
+  auto decoded2 = Elheif::decode(encoded.data.data(), encoded.data.size());
+  EXPECT_EQ(decoded2.data.size(), 1);
+  EXPECT_EQ(decoded2.err, "");
+  EXPECT_EQ(decoded2.data[0].width, 1280);
+  EXPECT_EQ(decoded2.data[0].height, 720);
 }
diff --git a/web-test-runner.config.mjs b/web-test-runner.config.mjs
index 9154015..6596e17 100644
--- a/web-test-runner.config.mjs
+++ b/web-test-runner.config.mjs
@@ -10,11 +10,12 @@ export default {
         playwrightLauncher({
             product: 'chromium',
         }),
+        playwrightLauncher({ product: 'firefox' }),
+        ...(process.env.TEST_WEBKIT ? [playwrightLauncher({ product: 'webkit' })] : []),
     ],
     plugins: [
         esbuildPlugin({ ts: true }),
     ],
-    middleware: [add_headers],
     coverage: true,
     coverageConfig: {
         reporters: ['lcovonly', 'clover'],