A WebP file is raster. It stores a grid of pixels, so it turns blurry the moment you scale it up. An SVG is the opposite. It is a vector built from math-based paths that stay sharp at any size. You cannot just rename one to the other. This converter vectorizes your WebP, tracing its shapes into real SVG paths so the result is infinitely scalable. No software to install and no Illustrator licence to buy.