diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..c0f1740
--- /dev/null
+++ b/.env.example
@@ -0,0 +1 @@
+VITE_GA_MEASUREMENT_ID=G-XXXXXXXXXX
diff --git a/.gitignore b/.gitignore
index 6d036fa..f3de697 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,6 +12,13 @@ dist
 dist-ssr
 *.local
 
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
 # Editor directories and files
 # .vscode/*
 !.vscode/extensions.json
diff --git a/src/vite-env.d.ts b/src/vite-env.d.ts
index 11f02fe..c8142b1 100644
--- a/src/vite-env.d.ts
+++ b/src/vite-env.d.ts
@@ -1 +1,9 @@
 /// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+  readonly VITE_GA_MEASUREMENT_ID: string
+}
+
+interface ImportMeta {
+  readonly env: ImportMetaEnv
+}