How to make my product page photos higher resolution - FAST HELP NEEDED

[nicotiini]

I would like to make my product page photos high resolution using code. 

www.grizelclothing.com

PASSWORD: CSV2

[Taknify]

You have two choices to make high resolution images.
With code, you may have to remove Shopify's automatic image resizing system and just use the width and height of the image you uploaded (aka master)
The second solution is not via code but by yourself. You need to upload a high quality image. I'm taking about 1500 px * 2250 px or even more while maintaining aspect ratio. 

Let me know if this is helpful. If you need me to help you out, send me your store access in my DM.