diff --git a/.gitignore b/.gitignore
index ca07100..55a63ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ dist/
 .env
 *.log
 .copilot-settings.json
+*.pptx
diff --git a/docs/LINE-1-Digital-Twin-Demo.pptx b/docs/LINE-1-Digital-Twin-Demo.pptx
deleted file mode 100644
index c44a7f7..0000000
Binary files a/docs/LINE-1-Digital-Twin-Demo.pptx and /dev/null differ