Image resize with variation

I used variations and I would like to know if it is possible to offer the best variation when a user accesses my website?
For example on the page: https://scentic.ro/produs/essence-ruj-cu-colagen-vegan-pentru-ingrijire-caring-shine-201-my-dream-3-5g/
delivers to me: https://imagedelivery.net/VOV8cYVvt_L99vH_s9C_GQ/77fcb0f9-1830-432a-1bc0-5b1c79541400/w=2000.

How can I set to deliver w=700?

• This topic was modified 2 years, 11 months ago by validanciu.

The page I need help with: [log in to see the link]