SVG — vector graphics — is essentially different from JPG. Whereas JPG encodes photos as a raster of pixels, SVG stores graphics as geometric descriptions of shapes, lines and colors. Meaning SVG files can be displayed at every size — from a tiny icon to a large banner — without any quality loss.
Changing JPG to SVG is a technique known as raster to vector conversion, and it is particularly valuable for icons and flat artwork.
When converting JPG to SVG, it is important to understand how the process works. A JPG is a bitmap image — a fixed grid of pixels. An SVG is a scalable image — a series of geometric shapes that applications displays as the artwork.
Results are excellent for uncomplicated graphics with distinct shapes and minimal colors — icons, logos, symbols and website flat artwork. It does not work for detailed photographs with thousands of colors.
For quality conversion, Illustrator's Image Trace function provides the most precision. Load the image in Illustrator, select the graphic, access the Image Trace panel and choose an relevant setting.
Try alljpgconverters.com for a completely free web-based JPG to SVG tool requiring no software needed.