From 91cf0908209f8d983748dedfbe1c399cdfeaddb1 Mon Sep 17 00:00:00 2001
From: azivner <adam.zivner@gmail.com>
Date: Sat, 6 Jan 2018 13:53:02 -0500
Subject: [PATCH] compressing PNGs with pngquant

---
 routes/api/image.js | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/routes/api/image.js b/routes/api/image.js
index 358d015db..766e0c720 100644
--- a/routes/api/image.js
+++ b/routes/api/image.js
@@ -8,6 +8,7 @@ const utils = require('../../services/utils');
 const multer = require('multer')();
 const imagemin = require('imagemin');
 const imageminMozJpeg = require('imagemin-mozjpeg');
+const imageminPngQuant = require('imagemin-pngquant');
 const jimp = require('jimp');
 
 router.get('/:imageId/:filename', auth.checkApiAuth, async (req, res, next) => {
@@ -54,17 +55,20 @@ router.post('/upload', auth.checkApiAuth, multer.single('upload'), async (req, r
 });
 
 const MAX_SIZE = 1000;
+const MAX_BYTE_SIZE = 200000; // images should have under 100 KBs
 
 async function resize(buffer) {
     const image = await jimp.read(buffer);
 
+    console.log("Size: ", buffer.byteLength);
+
     if (image.bitmap.width > image.bitmap.height && image.bitmap.width > MAX_SIZE) {
         image.resize(MAX_SIZE, jimp.AUTO);
     }
     else if (image.bitmap.height > MAX_SIZE) {
         image.resize(jimp.AUTO, MAX_SIZE);
     }
-    else {
+    else if (buffer.byteLength <= MAX_BYTE_SIZE) {
         return buffer;
     }
 
@@ -85,8 +89,11 @@ async function resize(buffer) {
 async function optimize(buffer) {
     return await imagemin.buffer(buffer, {
         plugins: [
-            imageminMozJpeg({
-                quality: 50
+            // imageminMozJpeg({
+            //     quality: 50
+            // }),
+            imageminPngQuant({
+                quality: "0-70"
             })
         ]
     });