The EWWW Image Optimizer is the only plugin that can compress images for free directly on your site without any third-party API/service. While many web hosts allow this sort of “local” compression, not all do. For sites that can’t do local compression, we offer free JPG-only cloud-based compression (unlimited images and file size).
Thus, certain free features, like lossless PNG, GIF, and SVG compression, only work in local compression mode. Since lossless PNG compression only works with local mode, PNG to WebP conversion can only be done if local mode is allowed by your web host.
