This can be done using both free tools and professional software ... Similar to JPG, a PNG can also be converted to SVG. Use ...

You can do much more with paint.net than with Paint. You can add layers, adjust colors or remove certain areas of the image ...

See: How to convert JPEG and PNG image files to PDF in Windows. FreeFileConvert, as the name suggests, is a free online file converter that also lets you convert an EPS image to SVG format.