From cc127eeabd5cdd42f1a472e43938c6a202e89626 Mon Sep 17 00:00:00 2001
From: comfyanonymous <comfyanonymous@protonmail.com>
Date: Thu, 23 Mar 2023 00:40:48 -0400
Subject: [PATCH] Lower PNG compression for more speed.

After some quick tests compress_level=4 seems to give the best compression
performance ratio for stable diffusion images.

It's 10x faster than max compression for an image size increase of only
2.5%.
---
 nodes.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nodes.py b/nodes.py
index 530f4cea..0b8be765 100644
--- a/nodes.py
+++ b/nodes.py
@@ -779,7 +779,7 @@ class SaveImage:
                     metadata.add_text(x, json.dumps(extra_pnginfo[x]))
 
             file = f"{filename}_{counter:05}_.png"
-            img.save(os.path.join(full_output_folder, file), pnginfo=metadata, optimize=True)
+            img.save(os.path.join(full_output_folder, file), pnginfo=metadata, compress_level=4)
             results.append({
                 "filename": file,
                 "subfolder": subfolder,