diff --git a/.github/workflows/preview-build.yml b/.github/workflows/preview-build.yml
new file mode 100644
index 0000000..7e6c838
--- /dev/null
+++ b/.github/workflows/preview-build.yml
@@ -0,0 +1,36 @@
+name: Build Preview
+
+on:
+  pull_request:
+    branches: [main]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build site
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: "24"
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build GAP website
+        run: npm run build
+
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: preview-build
+          path: _site
+          retention-days: 1
diff --git a/wrangler.jsonc b/wrangler.jsonc
new file mode 100644
index 0000000..7ffd0bb
--- /dev/null
+++ b/wrangler.jsonc
@@ -0,0 +1,8 @@
+{
+  "$schema": "node_modules/wrangler/config-schema.json",
+  "name": "gaps",
+  "compatibility_date": "2026-05-23",
+  "assets": {
+    "directory": "./_site"
+  }
+}