PNG to WebP

The usual reason for converting PNG to WebP is transparency. Product photos cut out from their background, logos, badges and interface graphics are often stored as PNG because it is the classic format with an alpha channel, and JPG would fill that background with white. WebP also keeps transparency, and it is supported by all modern browsers, so it lets you serve those same images on a website at a lighter weight without losing the transparent areas.

It helps to know what kind of WebP you get. Pikkx writes lossy WebP, controlled by the quality slider, while PNG is lossless. For a product cutout or an illustration with gradients the default of 80 usually works well. For flat graphics with sharp edges, small text or thin lines, like logos and icons, raise the quality to 90 or more and look closely at the edges. Pikkx shows the size before and after for each file, so you can see what the conversion actually saves.

WebP is not always the right move. If the image will be used outside a browser, for example in office documents, some design tools or systems that only accept classic formats, keep the PNG. Very small icons that are already tiny as PNG may not gain much. And if your site builder does not accept WebP, you can still make the PNG itself lighter by compressing it without changing the format. For photos without transparency, the general Convert to WebP page is a closer fit.

Drop your PNG files onto the page, up to 10 at a time and 5 MB each. WebP comes preselected; set the quality depending on the type of graphic, and add PNG or JPG as extra outputs if you want to compare formats side by side. The images keep their original dimensions unless you tick a size. Download them one by one or as a single ZIP. All the processing happens on your device, and the WebP is rebuilt from the pixels, so metadata in the PNG is not carried over.