Scalable Vector Graphics — vector graphics — is fundamentally different from JPG. While JPG stores images as a grid of pixels, SVG stores images as mathematical descriptions of paths and colors. This means SVG images scale to any size — from a 16x16 pixel favicon to a massive print — without pixelation.
Changing JPG to SVG is a operation called vectorization, and it is very beneficial for illustrations and flat artwork.
Prior to converting JPG to SVG, it is essential to understand what happens. JPG files are a pixel-based image — a fixed grid of image pixels. SVG files are a mathematical image — a collection of paths that a browser displays as the graphic.
This works extremely well for uncomplicated graphics with defined shapes and limited colors — icons, logos, symbols and line art. It works less well for detailed photographs with fine detail.
For professional results, Illustrator's Image Trace function gives the most flexibility. Load the image in Illustrator, click the image, open the Image here Trace dialog and select an appropriate preset.
Try alljpgconverters.com offering a completely free online JPG to SVG converter without download needed.