www.wysiwygwebbuilder.com

I found a website that makes it possible to reduce the size of your images with same quality.

for png, go here http://compresspng.com/
for jpg, go here http://compressjpeg.com/

I've tried quite a few resizers and most are overkill or multi use progs, cumbersome or keep placing new images in different folders where I cant find them easily so this has been fast and convenient so far. No install needed just open a browser and drag.

https://bulkresizephotos.com/

We use this one:

https://tinypng.com/