From a994c93dee987d294016e8592c2bd161e06cfcd3 Mon Sep 17 00:00:00 2001
From: Otto Nascarella <ottoln@gmail.com>
Date: Thu, 25 Apr 2013 12:18:50 -0300
Subject: [PATCH] Progressive JPEG

https://plus.google.com/+PaulIrish/posts/5KzxfS9nNEZ
---
 classes/ImageManager.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/classes/ImageManager.php b/classes/ImageManager.php
index c7500c8fd..c647b6ea3 100644
--- a/classes/ImageManager.php
+++ b/classes/ImageManager.php
@@ -407,6 +407,7 @@ class ImageManagerCore
 			case 'jpeg':
 			default:
 				$quality = (Configuration::get('PS_JPEG_QUALITY') === false ? 90 : Configuration::get('PS_JPEG_QUALITY'));
+				imageinterlace($resource,1); /// make it PROGRESSIVE
 				$success = imagejpeg($resource, $filename, (int)$quality);
 			break;
 		}