From a1c2d904ba00104af752ec2a15c89a7d03f7e83d Mon Sep 17 00:00:00 2001
From: Jordan Williams <jordan@jwillikers.com>
Date: Sun, 1 Jun 2025 15:43:35 -0500
Subject: [PATCH] Invoke ect with multithreaded deflate enabled

---
 lib/pdfsizeopt/main.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/pdfsizeopt/main.py b/lib/pdfsizeopt/main.py
index 946d6ab..bcbbf80 100644
--- a/lib/pdfsizeopt/main.py
+++ b/lib/pdfsizeopt/main.py
@@ -9437,8 +9437,8 @@ def GetDir(file_name):
     'optipng':  'optipng %(sourcefnq)s -o4 -fix -force %(optipng_gray_flags)s-out %(targetfnq)s',
     'optipng4': 'optipng %(sourcefnq)s -o4 -fix -force %(optipng_gray_flags)s-out %(targetfnq)s',
     'optipng7': 'optipng %(sourcefnq)s -o7 -fix -force %(optipng_gray_flags)s-out %(targetfnq)s',  # Slowest.
-    'ect': 'ECT -9 -strip %(targetfnq)s',
-    'ECT': 'ECT -9 -strip %(targetfnq)s',
+    'ect': 'ECT -9 -strip --mt-deflate %(targetfnq)s',
+    'ECT': 'ECT -9 -strip --mt-deflate %(targetfnq)s',
     'advpng':  'advpng -z3 -f %(targetfnq)s',
     'advpng3': 'advpng -z3 -f %(targetfnq)s',
     'advpng4': 'advpng -z4 -f %(targetfnq)s',  # Slowest, this uses Zopfli.