diff --git a/.scripts/generate_tumbnails.sh b/.scripts/generate_tumbnails.sh
index 389116b..3bd6cb1 100755
--- a/.scripts/generate_tumbnails.sh
+++ b/.scripts/generate_tumbnails.sh
@@ -28,6 +28,7 @@ thumbnail(){
 	jpegq=75
 	webpq=55
 	cavifq=35
+	pngq="60-90"
 
 # Si une image est un thumbnail on la considère comme déjà bien traitée.
 	if [[ $2 == *".thumb."* ]]; then
@@ -56,6 +57,7 @@ thumbnail(){
 		pngcrush -warn "$2" "$2.tmp"
 		mv -f "$2.tmp" "$2"
 		/usr/bin/convert -resize $maxwidth\> "$2" "$thumbname"
+		/usr/bin/pngquant --quality=$pngq --skip-if-larger --force --transbug "$thumbname" -o "$thumbname"
 		/usr/bin/convert -resize $maxwidth\> -quality $webpq "$2" "$thumbwebpname"
 		pngcrush -warn "$thumbname" "$thumbname.tmp"
 		mv -f "$thumbname.tmp" "$thumbname"