Maximum file upload size?

• We do not know the exact file upload limits. Based on our tests and user feedback, the maximum file size you can upload to Shopify is around 20 MB per file. The maximum image dimensions supported are 4427 x 4472 pixels.
  
  

File upload types?

• The app supports all types of files. Thus, you can upload any file type whether it’s jpeg, jpg, png, etc. Since this is handled by Shopify, the file gets converted into .webp regardless of the file type you upload.

Files location or Image uploads by customers?

• All images or files will reside on Shopify's servers. A link is automatically generated to the file location. A downloadable link will appear in the cart and the email confirmations.