I'm looking for a recommendation for free lazy loading extension that is likely works for Magento 2.2.9 with infortis ultimo theme.
here are some list i found:
-welt MAGENTO 2 LAZY LOAD PRODUCTS AND IMAGES.
-bss Magento 2 Lazy Load
-magezon Magento 2 Lazy Load Extension
-Magento 2 Image Lazy Load Extension
have anyone try any of them, and recommended or not recommended?