innermond · September 8, 2023 18:17 · Sep 8, 2023
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,62 @@
+#!/bin/bash
+cd "$(dirname "$0")"
+
+shopt -s nocaseglob
+
+rm -frv ./optimized_images/*
+mkdir -p ./optimized_images/400w
+
+AWS_PATH="<s3-uri>"
+for f in ./unoptimized_images/*.{jpg,jpeg,png}
+do
+  if [ -f "$f" ]; then
+    ext="${f##*.}"
+    fn=$(basename "$f")
+
+    fn_optimized="./optimized_images/$fn"
+    fn_optimized_webp="${fn_optimized%.*}".webp
+
+    fn_optimized_400w="./optimized_images/400w/$fn"
+    fn_optimized_webp_400w="${fn_optimized_400w%.*}".webp
+
+    ff=( "$fn_optimized" "$fn_optimized_400w" "$fn_optimized_webp" "$fn_optimized_webp_400w" )
+
+    # resize into given dimensions keeping ratio or original dimensions in case the image fits entirely into given dimensions
+    for img in "${ff[@]}"; do
+      resize="700x1240>"
+      if [[ "$img" == */400w/* ]]; then
+        resize="400x"
+      fi
+      extimg="${img##*.}" 
+      case "$ext" in 
+        jpg|jpeg)
+          if [ "$extimg" != "webp" ]; then
+            img="${img%.*}".jpg
+            convert "$f" -resize "$resize" -sampling-factor 4:2:0 -strip -quality 80 -interlace JPEG -colorspace sRGB -sigmoidal-contrast 5,50% "$img"
+          else
+            convert "$f" -resize "$resize" -define webp:lossless=false "$img"
+          fi
+          ;;
+        png)
+          if [ "$extimg" != "webp" ]; then
+            optipng "$f" -out "$fn_optimized"
+            mogrify -resize "$resize" -sigmoidal-contrast 5,50% "$img"
+          else
+            convert "$f" -resize "$resize" -define webp:lossless=false "$img"
+          fi
+          ;;
+        *)
+          echo "Skypping unknown extension ["$ext"]"
+          ;;
+      esac
+      aws_file="${img##*/}"
+      if [[ "$img" == */400w/* ]]; then
+        aws_file=400w/"$aws_file"
+      fi
+
+      aws s3 cp $img $AWS_PATH/$aws_file --acl public-read --metadata "Cache-Control=max-age=2592000"
+    done
+  fi
+done
+
+shopt -u nocaseglob