Core Web Vitals are not just a developer concern. Many performance issues originate in design decisions: oversized hero images, layout shifts caused by dynamic content, and heavy animations that block the main thread.
LCP: Largest Contentful Paint
Your hero section design directly impacts LCP. Use appropriately sized images, consider using CSS gradients or SVGs for decorative elements, and ensure your above-the-fold content loads quickly.
CLS: Cumulative Layout Shift
Always define dimensions for images and embeds in your designs. Avoid inserting dynamic content above existing content. Design loading states that match the final layout to prevent shifts.
INP: Interaction to Next Paint
Keep animations lightweight. Avoid complex JavaScript-driven interactions when CSS transitions will do. Design interactions that feel instant by providing immediate visual feedback.