SVG is a vector format: it describes shapes rather than pixels, so it stays sharp at any size and is ideal for logos and icons on a website. Plenty of places do not accept it, though, including most social networks, many document editors, email signatures and some app stores, and there a PNG is the standard substitute. PNG keeps the transparent background that a logo usually has, so the converted file drops onto any colour without a box around it. This page opens with PNG as the output; drop the SVG files and convert. The one thing to watch is size. Converting from vector to pixels fixes the resolution, and the PNG is drawn at the width and height written in the SVG file. The converter never enlarges, so if you need a big PNG, for example a 2000 pixel logo for print or a high density screen, open the SVG in a text editor or design tool and set larger width and height values first. An SVG that refers to external fonts or images may render with fallbacks, since the file is drawn in isolation; converting text to outlines before exporting avoids that. To clean up an SVG before converting use SVG Optimizer, and for favicons use PNG to ICO 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.