Converting SVG to PNG draws your vector artwork onto a fixed grid of pixels. The result keeps its transparent background and opens in software that has never heard of SVG. The trade-off is that the PNG has one set size: enlarge it later and edges blur, where the original would have stayed sharp.
Transfers use HTTPS, and files converted on the free tier are deleted within 24 hours, so the result is not a long-term archive. Quality depends on the source file, so open the PNG file once before you share it.
FromSVGLosslessTransparency
SVG (Scalable Vector Graphics)
An XML-based vector format from the W3C. Shapes, paths and text are stored as drawing instructions, not pixels, so an SVG stays sharp at any size and can be styled with CSS, animated or scripted inside a browser.
ToPNGLosslessTransparency
PNG (Portable Network Graphics)
A lossless raster format with an alpha channel. It records a fixed grid of pixels exactly, keeps transparent and semi-transparent areas, and is accepted by office suites, social networks, app stores and almost every program that handles pictures.