diff --git a/.github/workflows/size.yml b/.github/workflows/size.yml
new file mode 100644
index 0000000..61b2f1a
--- /dev/null
+++ b/.github/workflows/size.yml
@@ -0,0 +1,24 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: 'package.json'
+          cache: 'npm'
+          cache-dependency-path: '**/package-lock.json'
+
+      - uses: preactjs/compressed-size-action@v2