The spreadr-hidden tag can be added via 2 methods:

1. Via Spreadr Dashboard

a. Login to Spreadr Dashboard

b. Goto 'Settings' page

c. Click 'Default Values'

d. Add spreadr-hidden tag in the Tags field

All products which you now import from Amazon will have spreadr-hidden tag added to them.

2. Via Shopify Dashboard (for products already imported via Spreadr)

a. In Shopify dashboard goto the product page where you want to apply spreadr-hidden tag

b. Look for Tags input section

c. Add spreadr-hidden tag

Repeat for all products for which you do not want 'View on Amazon' button.