diff --git a/build.sh b/build.sh
index 0201bd7..88b6aa7 100755
--- a/build.sh
+++ b/build.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 # create the build dir if it doesn't already exist
 mkdir -p ./build
 
@@ -7,6 +9,30 @@ cp -r {assets,pack.png,pack.mcmeta} ./build
 # change working dir into the build dir
 cd build
 
+# detect arch for downloading OxiPng
+frfrarch=$(uname -m)
+echo SYSTEM ARCHITECTURE IS $frarch
+# get and use oxipng if it is available for your architecture
+if [[ $frfrarch == "x86_64" ]]; then
+    echo "downloading oxipng x64"
+    wget -O oxipng.tar.gz https://github.com/shssoichiro/oxipng/releases/download/v9.1.3/oxipng-9.1.3-x86_64-unknown-linux-musl.tar.gz
+elif [[ $frfrarch ==  "aarch64" ]]; then
+    echo "downloading oxipng arm64"
+    wget -O oxipng.tar.gz https://github.com/shssoichiro/oxipng/releases/download/v9.1.3/oxipng-9.1.3-aarch64-unknown-linux-musl.tar.gz
+else
+    echo unknown architecture, oxipng wont be used
+fi
+
+# banger size reduction on files in build dir yep
+if [[ -e oxipng.tar.gz ]]; then
+    tar -xvzf oxipng.tar.gz
+    rm oxipng.tar.gz
+    mv ./oxipng* ./oxipngdir
+    mv ./oxipngdir/oxipng ./oxipng
+    chmod +x oxipng
+    oxipng -o max --strip all --alpha **/*.png
+fi
+
 # remove all the gimp files (those don't do anything in the final build)
 find . -name "*.xcf" -type f -delete