WebP combines the photographic efficiency of JPG with the alpha transparency of PNG, delivering 30% smaller files across 97% of browsers.
How WebP unifies web image formats
Historically developers juggled JPG for photos and PNG for transparent graphics. WebP, built by Google on predictive coding from the VP8 video codec, supports lossy and lossless compression plus a full 8-bit alpha channel in one container.
By predicting pixel values from neighbouring blocks and encoding only the residual difference, WebP routinely produces files 25-35% smaller than JPEG and up to 70% smaller than unoptimized PNG.
Convert your images to WebP now
Test WebP compression on your own PNG or JPG files directly in the browser.
SEO and Core Web Vitals impact
Lighthouse and PageSpeed Insights explicitly flag legacy JPEG and PNG assets under the next-gen formats audit. Switching heavy hero and product images to WebP improves Largest Contentful Paint, which is a confirmed ranking signal.