Why Image Formats Dictate Web Speed
Images account for more than 60% of the total byte weight of average websites today. Slow-loading hero banners and unoptimized thumbnails directly damage your Google Core Web Vitals (specifically Largest Contentful Paint - LCP) and hurt conversion rates.
1. JPEG (Joint Photographic Experts Group)
Ideal for complex photographs with millions of colors and gradients. Uses lossy compression that significantly reduces file size while remaining visually pleasing.
2. PNG (Portable Network Graphics)
The standard for graphics requiring transparent backgrounds, crisp logos, UI screenshots, and diagrams with sharp vector edges.
3. Modern WebP & AVIF
Developed by Google, WebP provides 25% to 34% smaller file sizes compared to JPEG at equivalent quality ratings, supporting both lossy and lossless modes with alpha transparency.
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