From: Mischa POSLAWSKY <perl@shiar.org>
Date: Sat, 18 Jan 2020 14:14:10 +0000 (+0100)
Subject: thumb: prefer progressive jpeg encoding
X-Git-Tag: v4.4~12
X-Git-Url: http://git.shiar.net/minimedit.git/commitdiff_plain/f6a56971c28026ca8f67783518b0ba6a39e1f8bc

thumb: prefer progressive jpeg encoding

Intermediate rendering for faster results, and overall smaller file sizes
similar (if not identical) to jpegtran -optimize or PageSpeed.
---

diff --git a/thumb/index.php b/thumb/index.php
index fbea220..5291047 100644
--- a/thumb/index.php
+++ b/thumb/index.php
@@ -90,6 +90,7 @@ function mkthumb_exec($source, $target, $width, $height)
 		'-delete', '1--1',
 		'-trim',
 		'-background', 'white', '-layers', 'flatten',
+		'-interlace', 'plane', # progressive
 		'-resize', "${width}x${height}",
 		'-quality', '90%',
 		$source, "jpg:$target"