From 346e649f606182086fae46cdd02119a263d098cc Mon Sep 17 00:00:00 2001
From: Robert Günzler <r@gnzler.io>
Date: Mon, 17 Mar 2025 20:50:43 +0100
Subject: add edit.mk helpers to compress images
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Robert Günzler <r@gnzler.io>
---
 edit.mk | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/edit.mk b/edit.mk
index 23671f9..48f6856 100644
--- a/edit.mk
+++ b/edit.mk
@@ -10,4 +10,22 @@ change:
 	@ ${MAKE} gen
 	@ ${MAKE} commit
 
-.PHONY: commit edit
+.PHONY: commit edit change
+
+compress:
+    # => https://kokorobot.ca/site/image_optimization.html
+	magick $(IN) \
+        -sampling-factor 4:2:0 \
+        -strip \
+        -quality 85 \
+        -interlace line \
+        $(OUT)
+        # -colorspace sRGB \
+
+dither:
+    # => https://legacy.imagemagick.org/Usage/quantize/#ordered-dither
+	magick $(IN) \
+        -ordered-dither o8x8 \
+        $(OUT)
+
+.PHONY: compress dither
-- 
cgit 1.4.1