Image Optimization Basics

Image Optimization Basics improves page speed, usability, and search relevance by ensuring images are properly sized, named, and tagged.

Slow-loading images can hurt user experience and Core Web Vitals, while missing alt text reduces accessibility and search relevance. Optimized images improve load time, mobile usability, and SEO signals.

Compressing images from 2 MB to 200 KB on a blog reduced average page load time from 4.5s to 1.8s, improving both user engagement and search rankings.

Best Practices

• Use descriptive filenames and alt attributes
• Compress images without sacrificing quality
• Use next-gen formats like WebP for faster load times
• Implement lazy loading for images below the fold

Impact: Sites following image optimization best practices often see 5–15% improvement in page speed metrics and reduced bounce rates.