From ab24374041b4f40f430780ff2f47f7b93c9db671 Mon Sep 17 00:00:00 2001
From: Ethan Dalool <git@voussoir.net>
Date: Sun, 29 Oct 2023 12:14:33 -0700
Subject: [PATCH] Convert 1-bit images to grayscale to stop aliasing.

---
 resize.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/resize.py b/resize.py
index 113ce75..74f317a 100644
--- a/resize.py
+++ b/resize.py
@@ -106,6 +106,10 @@ def resize(
 
     log.debug('Resizing %s to %dx%d.', file.absolute_path, width, height)
     resampler = PIL.Image.NEAREST if nearest_neighbor else PIL.Image.LANCZOS
+
+    if image.mode == '1':
+        image = image.convert('L')
+
     image = image.resize( (width, height), resampler)
 
     if output_file.extension == '.jpg':