From 98711619ff82724aa7e7db07023ac990f9a1552f Mon Sep 17 00:00:00 2001
From: MaxJa4 <74194322+MaxJa4@users.noreply.github.com>
Date: Tue, 8 Jun 2021 22:39:45 +0200
Subject: [PATCH] Create image_processing.py

Added central function to rescale and compress images for recipes (or in general).
Switched from previously used PNG format to 75% JPEG format for a 5-10x file size reduction with hardly any quality loss.
---
 cookbook/helper/image_processing.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 cookbook/helper/image_processing.py

diff --git a/cookbook/helper/image_processing.py b/cookbook/helper/image_processing.py
new file mode 100644
index 000000000..bf84070fa
--- /dev/null
+++ b/cookbook/helper/image_processing.py
@@ -0,0 +1,15 @@
+from PIL import Image
+from io import BytesIO
+
+
+def rescale_image(image_object, base_width=720):
+    img = Image.open(image_object)
+    icc_profile = img.info.get('icc_profile')  # remember color profile to not mess up colors
+    width_percent = (base_width / float(img.size[0]))
+    height = int((float(img.size[1]) * float(width_percent)))
+
+    img = img.resize((base_width, height), Image.ANTIALIAS)
+    img_bytes = BytesIO()
+    img.save(img_bytes, 'JPEG', quality=75, optimize=True, icc_profile=icc_profile)
+
+    return img_bytes