Images are typically the largest assets on a web page and the biggest contributor to slow load times. Google's Core Web Vitals — specifically LCP (Largest Contentful Paint) — are directly affected by how well your images are optimized. This guide covers the three things that actually move the needle: choosing the right format, resizing to the right dimensions, and compressing without visible quality loss. Step 1 — Choose the Right Format Format Best For Avoid For WebP Photos, general web images IE11 users (rare, but exists) JPG Photos when WebP isn't supported Logos, icons with transparency PNG Screenshots, logos, images with transparency Large photos (file size too large) SVG Icons, logos, illustrations Photos AVIF Best compression, modern browsers only Broad compatibility needs WebP is the default choice for 2024+. It delivers 25–35% smaller files than JPG at equivalent visual quality and is supported by all modern browsers.…