Optimizing images involves reducing their file size without compromising quality. Here are a few tips: - Compress Images: Use tools like TinyPNG or ImageOptim to reduce file sizes. - Use Appropriate Formats: JPEGs for photographs, PNGs for images with transparent backgrounds, and GIFs for animations. - Responsive Design: Ensure images are responsive and adapt to different screen sizes. Use CSS to set max-width to 100%. - Alt Text: Always include descriptive alt text for accessibility and for cases where images do not load.