diff --git a/.env.example b/.env.example
index 19912d3..681bcdd 100644
--- a/.env.example
+++ b/.env.example
@@ -1,3 +1,7 @@
+# Simple SpaceAPI
+## Base URL for serving uploaded files (e.g., ${APP_URL}/uploads/filename.png)
+APP_URL=https://your.simple.spaceapi.domain
+
 # Strapi
 STRAPI_TELEMETRY_DISABLED=true