PNG is the right target for a WebP image when the picture has a transparent background or sharp edges you want to keep exactly. Logos, icons, product cut-outs, stickers and screenshots saved from websites usually fall into that group. PNG keeps the alpha channel, so a logo with a transparent background stays transparent, and because PNG is lossless no further compression artifacts are added however many times you edit and save it afterwards. This page opens with PNG as the output; drop the WebP files and convert. Lossless does not mean the PNG is better than the WebP it came from. If the WebP was saved with lossy compression, which most website images are, the PNG preserves that image exactly as it is, artifacts included, in a larger file. For a photo that you only want to open or share, JPG is a more sensible target and much smaller. Animated WebP files are converted as a single still frame. The converter also accepts PNG, AVIF and HEIC if you have a mix of files. For photographs use WebP to JPG Converter, and to go the other way and shrink a PNG for the web see PNG to WebP Converter.
Choosing the right image format for web use has a significant impact on file size and quality. JPEG (Joint Photographic Experts Group) uses lossy compression optimized for photographs: it discards subtle color gradients in ways the human eye does not easily notice, achieving compression ratios of 10:1 to 20:1 at acceptable quality. PNG (Portable Network Graphics) uses lossless compression and supports full transparency (alpha channel), making it ideal for logos, icons, screenshots, and images with sharp edges or text. WebP is Google's modern format that achieves better compression than both JPEG and PNG at equivalent quality: typically 25 to 35 percent smaller than JPEG at the same quality setting, and 26 percent smaller than PNG for lossless images. WebP also supports transparency like PNG. GIF (Graphics Interchange Format) is the oldest format still in use, primarily kept alive by its support for animation. For still images, GIF is inferior to PNG in both quality and compression, limited to 256 colors per frame. Converting to WebP for web delivery is the most impactful single optimization for image-heavy sites. Browser support for WebP is now essentially universal (Chrome, Firefox, Safari 14+, Edge). For cases where legacy Safari support is required, serving WebP via a picture element with a JPEG fallback provides the best result across all browsers.