Product images
Upload sensibly sized images, use WebP/AVIF where supported, and avoid 3000–5000 px originals for small product cards. WordPress and WooCommerce generate responsive thumbnails.
Caching
Catalog page caching can help, but Cart, Checkout, My Account, and WooCommerce AJAX requests must be excluded according to your cache plugin guidance.
JavaScript optimization
Retest the slider, wishlist, Buy Now, mobile drawer/search, product variations, and cart fragments after enabling aggressive delay/defer/combine settings.
Product SEO
Use unique titles, useful product descriptions, clear categories, meaningful image alt text, WooCommerce/SEO schema, breadcrumbs, and internal links from categories and homepage sections.
Core Web Vitals
Prioritize the hero/main-product LCP asset, keep image dimensions explicit, avoid heavy above-the-fold popups, and limit unnecessary third-party scripts.