diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..24a8e87
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.png filter=lfs diff=lfs merge=lfs -text
diff --git a/.gitignore b/.gitignore
index 542f754..2361c75 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,9 @@ presentation/*
 !presentation/*.tex
 !presentation/*.sty
 !presentation/Makefile
+!presentation/imgs/
+presentation/imgs/*
+!presentation/imgs/*.png
 
 bin/
 lib/