Images account for roughly 50% of the total weight of an average web page. Serving them in outdated formats like unoptimized PNG or full-size JPEG directly impacts Core Web Vitals — particularly Largest Contentful Paint (LCP). Google explicitly recommends using next-generation formats like WebP and AVIF in its PageSpeed Insights audits. WebP files are typically 25-35% smaller than equivalent JPEGs, while AVIF can cut file sizes by up to 50% with comparable visual quality.

Our Image Converter for Web handles this conversion in your browser. Upload any JPG, PNG, or HEIC file and get a properly optimized WebP or AVIF output ready for your site, CDN, or CMS.

For hero images and photos, WebP offers the best balance of compatibility and compression — it is supported by over 97% of browsers worldwide. For sites that can serve different formats via the <picture> element, AVIF provides even greater savings. Logos, icons, and illustrations with flat colors still benefit from PNG or SVG, but photographic content should always use a modern lossy format to keep your site fast and your users engaged.