Making a vector based graphics like the SVG, from raster or bitmap source (for example JPEG) won't work well in most cases, unless the picture contains some geometrical-only shapes or similar. Some graphics editors or even converters might still offer jpeg to svg conversion, but the resulting file will be usually a disappointment to the user. One of the better bitmap to vector converters is available from Vectormagic.
Open JPEG file Open SVG fileA vector-based drawing software
An online graphics converter and resizer
A CAD CGM converter
An online bitmap to vector conversion service