diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..5d16ce3
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,36 @@
+on: [pull_request]
+
+jobs:
+  prettier:
+    runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: true
+    name: prettier
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Use Node 20
+        uses: actions/setup-node@v3
+        with:
+          node-version: "20"
+      - name: Install
+        run: npm ci
+      - name: Check formatting
+        run: npm run format:check
+
+  build:
+    runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: true
+    name: build
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Use Node 20
+        uses: actions/setup-node@v3
+        with:
+          node-version: "20"
+      - name: Install
+        run: npm ci
+      - name: Build Vitepress
+        run: npm run build