Masters and image types
Admin > Preferences > Images defines types (cart, home, large). All of them derive from the product master. Replace masters with 1400–1600 px WebP, then regenerate once.
Why it matters
- Category pages show 20–40 products.
- Regeneration on cheap hosting dies on 8 MB masters.
- Modules that add WebP often duplicate every type.
How to do it
- Export product images.
- Convert to WebP at 1600 px / 80%.
- Re-upload or replace on disk following PrestaShop's hashed paths, then regenerate.
Settings that work
Large type often 800–1000 px display; a 1600 px master is enough for retina.