diff --git a/default/bash/functions b/default/bash/functions
index 538f607f..d184e50a 100644
--- a/default/bash/functions
+++ b/default/bash/functions
@@ -46,12 +46,22 @@ transcode-video-4K() {
   ffmpeg -i $1 -c:v libx265 -preset slow -crf 24 -c:a aac -b:a 192k ${1%.*}-optimized.mp4
 }
 
-# Transcode PNG to JPG image that's great for shrinking wallpapers
-transcode-png2jpg() {
+# Transcode any image to JPG image that's great for shrinking wallpapers
+img2jpg() {
   magick $1 -quality 95 -strip ${1%.*}.jpg
 }
 
-# Transcode PNG to JPG image that's great for sharing online without being too big
-transcode-png2jpg-1080() {
+# Transcode any image to JPG image that's great for sharing online without being too big
+img2jpg-small() {
   magick $1 -resize 1080x\> -quality 95 -strip ${1%.*}.jpg
 }
+
+# Transcode any image to compressed-but-lossless PNG
+img2png() {
+  magick "$1" -strip -define png:compression-filter=5 \
+    -define png:compression-level=9 \
+    -define png:compression-strategy=1 \
+    -define png:exclude-chunk=all \
+    "${1%.*}.png"
+}
+