WebP vs JPEG: Image Optimization for the Web
For over two decades, JPEG has been the undisputed king of web photography. However, as Google's Core Web Vitals heavily penalize slow page loads, the WebP format has emerged as the new standard for web performance.
What is WebP?
Developed by Google, WebP is a modern image format that provides superior lossless and lossy compression for images on the web. Using WebP, webmasters and developers can create smaller, richer images that make the web faster.
The Size Advantage
On average, WebP lossless images are 26% smaller in size compared to PNGs. WebP lossy images are 25-34% smaller than comparable JPEG images at equivalent structural similarity (SSIM) quality indexes.
Transparency Support
Unlike JPEG, which forces a solid background (usually white) behind transparent pixels, WebP natively supports an alpha channel. This means you can use WebP as a drop-in replacement for heavy PNG files while simultaneously benefiting from lossy compression algorithms.
Browser Compatibility
Initially, WebP suffered from lack of support in Safari. However, as of macOS Big Sur and iOS 14, Apple has fully adopted WebP. Today, WebP enjoys over 96% global browser support, making it entirely safe to deploy in production.