Product Personalizer uses Shopify’s CDN to save personalized images and Uploaded images by Customer.
Shopify recently introduced  .webp format (see the newsletter here )

Shopify automatically changes the filetypes to .webp

To save the images as the original file type do the following

1. Method one :

  • Go to the Orders in the Shopify Dashboard
  • Click on an Order
  • Over the image right click > save link as…

This will save the image as the original file type and not .webp

2. Method two :

After copying the link location add the following query param at the end of the link and download with browser

?format=png

Example :

Previous link : https://cdn.shopify.com/s/files/1/0118/0660/5378/uploads/5f16928de90b59b8840d40de369d3cf4.png

New Link : https://cdn.shopify.com/s/files/1/0118/0660/5378/uploads/5f16928de90b59b8840d40de369d3cf4.png?format=png