From d22b076b2eeffd401cc6decb060f8eda8854562a Mon Sep 17 00:00:00 2001
From: Julian Lam <julian@nodebb.org>
Date: Wed, 20 Oct 2021 14:07:15 -0400
Subject: [PATCH] feat: additional quality options for jpeg uploads, added
 quality and compression settings for png uploads

---
 src/image.js | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/image.js b/src/image.js
index 998bd8dd92..d1bb1de23e 100644
--- a/src/image.js
+++ b/src/image.js
@@ -52,8 +52,24 @@ image.resizeImage = async function (data) {
 		sharpImage.rotate(); // auto-orients based on exif data
 		sharpImage.resize(data.hasOwnProperty('width') ? data.width : null, data.hasOwnProperty('height') ? data.height : null);
 
-		if (data.quality && metadata.format === 'jpeg') {
-			sharpImage.jpeg({ quality: data.quality });
+		if (data.quality) {
+			switch (metadata.format) {
+				case 'jpeg': {
+					sharpImage.jpeg({
+						quality: data.quality,
+						mozjpeg: true,
+					});
+					break;
+				}
+
+				case 'png': {
+					sharpImage.png({
+						quality: data.quality,
+						compressionLevel: 9,
+					});
+					break;
+				}
+			}
 		}
 
 		await sharpImage.toFile(data.target || data.path);