diff --git a/.github/workflows/optimize-images.yml b/.github/workflows/optimize-images.yml
new file mode 100644
index 000000000..16d85ce12
--- /dev/null
+++ b/.github/workflows/optimize-images.yml
@@ -0,0 +1,17 @@
+name: Optimize images
+
+on:
+  pull_request:
+    branches: [ master, main, release/** ]
+    paths:
+      - "**/*.png"
+
+  push:
+    branches: [ master, main, release/** ]
+    paths:
+      - "**/*.png"
+
+jobs:
+  optimize-images:
+    uses: GTNewHorizons/GTNH-Actions-Workflows/.github/workflows/optimize-images.yml@master
+    secrets: inherit
diff --git a/src/main/resources/assets/modularui2/textures/gui/background/background.png b/src/main/resources/assets/modularui2/textures/gui/background/background.png
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diff --git a/src/main/resources/assets/modularui2/textures/gui/icons/arrow_left.png b/src/main/resources/assets/modularui2/textures/gui/icons/arrow_left.png
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