## Why Image Optimization Matters for SEO and Core Web Vitals
Large uncompressed images are the single biggest culprit behind slow website loading times, high bounce rates, and poor Google Core Web Vitals scores (specifically Largest Contentful Paint or LCP).
### Lossless vs. Lossy Compression - **Lossy Compression**: Selectively eliminates imperceptible visual data to drastically reduce file sizes by 60% to 85%. When done properly with modern algorithms, the human eye cannot distinguish the compressed image from the original. - **Lossless Compression**: Optimizes metadata and pixel encoding without removing any visual data, resulting in smaller 10-30% savings.
### Modern Image Formats: WebP & AVIF Converting traditional JPEG and PNG images into modern WebP format provides substantially better compression ratios while maintaining alpha transparency support.
### In-Browser Privacy Using HTML5 Canvas API for compression ensures your photos and proprietary design mockups remain entirely on your local machine without being uploaded to remote cloud servers.
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