diff --git a/package.json b/package.json
index 8385902f..ebea38cb 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "build": "node scripts/build.js",
     "size": "run-s size-global size-baseline",
     "size-global": "node scripts/build.js vue runtime-dom -f global -p",
-    "size-baseline": "node scripts/build.js runtime-dom runtime-core reactivity shared -f esm-bundler && cd packages/size-check && vite build",
+    "size-baseline": "node scripts/build.js runtime-dom runtime-core reactivity shared -f esm-bundler && cd packages/size-check && vite build && node brotli",
     "lint": "eslint --ext .ts packages/*/src/**.ts",
     "format": "prettier --write --parser typescript \"packages/**/*.ts?(x)\"",
     "test": "run-s \"test-unit -- {@}\" \"test-e2e -- {@}\" --",
diff --git a/packages/size-check/brotli.js b/packages/size-check/brotli.js
new file mode 100644
index 00000000..1e7ea0c7
--- /dev/null
+++ b/packages/size-check/brotli.js
@@ -0,0 +1,6 @@
+const { compress } = require('brotli')
+
+const file = require('fs').readFileSync('dist/index.js')
+const compressed = compress(file)
+const compressedSize = (compressed.length / 1024).toFixed(2) + 'kb'
+console.log(`brotli: ${compressedSize}`)